Sir William Osler, 1st Baronet, (; July 12, 1849 – December 29, 1919) was a Canadian physician and one of the "Big Four" founding professors of
Johns Hopkins Hospital
Johns Hopkins Hospital (JHH) is the teaching hospital and biomedical research facility of Johns Hopkins School of Medicine in Baltimore, Maryland. Founded in 1889, Johns Hopkins Hospital and its school of medicine are considered to be the foundin ...
. Osler created the first
residency program for specialty training of physicians.
He has frequently been described as the ''Father of Modern Medicine'' and one of the "greatest diagnosticians ever to wield a stethoscope".
In addition to being a physician he was a
bibliophile
A bookworm or bibliophile is an individual who loves and frequently reads or collects books. Bibliophilia or bibliophilism is the love of books.
Bibliophiles may have large, specialized book collections. They may highly value old editions, aut ...
, historian, author, and renowned practical joker. He was passionate about medical libraries and medical history, having founded the
History of Medicine Society (formally "section"), at the
Royal Society of Medicine
The Royal Society of Medicine (RSM) is a medical society based at 1 Wimpole Street, London, UK. It is a registered charity, with admission through membership. Its Chief Executive is Michele Acton.
History
The Royal Society of Medicine (R ...
, London. He was also instrumental in founding the
Medical Library Association of Great Britain and Ireland, and the (North American) Association of Medical Librarians (later the
Medical Library Association) along with three other people, including
Margaret Charlton, the medical librarian of his alma mater,
McGill University
McGill University (French: Université McGill) is an English-language public research university in Montreal, Quebec, Canada. Founded in 1821 by royal charter,Frost, Stanley Brice. ''McGill University, Vol. I. For the Advancement of Learning, ...
. He left his own large history of medicine library to McGill, where it became the
Osler Library.
Biography
Family
William Osler's great-grandfather, Edward Osler, was variously described as either a
merchant seaman or a
pirate
Piracy is an act of robbery or criminal violence by ship or boat-borne attackers upon another ship or a coastal area, typically with the goal of stealing cargo and valuable goods, or taking hostages. Those who conduct acts of piracy are call ...
. One of William's uncles,
Edward Osler (1798–1863), a medical officer in the
Royal Navy
The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom ...
, wrote the ''Life of Lord Exmouth'' and the poem ''The Voyage''.
William Osler's father, the Reverend Featherstone Lake Osler (1805–1895), the son of a shipowner at
Falmouth, Cornwall
Falmouth ( ; ) is a town, civil parish and port on the River Fal on the south coast of Cornwall, England, United Kingdom.
Falmouth was founded in 1613 by the Killigrew family on a site near the existing Pendennis Castle. It developed as a po ...
, was a former lieutenant in the Royal Navy who served on . In 1831, Featherstone Osler was invited to serve on as the science officer for
Charles Darwin
Charles Robert Darwin ( ; 12 February 1809 – 19 April 1882) was an English Natural history#Before 1900, naturalist, geologist, and biologist, widely known for his contributions to evolutionary biology. His proposition that all speci ...
's historic voyage to the
Galápagos Islands
The Galápagos Islands () are an archipelago of volcanic islands in the Eastern Pacific, located around the equator, west of the mainland of South America. They form the Galápagos Province of the Republic of Ecuador, with a population of sli ...
, but he turned it down because his father was dying. In 1833, Featherstone Osler announced that he wanted to become a minister of the
Church of England
The Church of England (C of E) is the State religion#State churches, established List of Christian denominations, Christian church in England and the Crown Dependencies. It is the mother church of the Anglicanism, Anglican Christian tradition, ...
.
As a teenager, Featherstone Osler was aboard when it was nearly destroyed by Atlantic storms and remained adrift for weeks. Serving in the Navy, he was shipwrecked off
Barbados
Barbados, officially the Republic of Barbados, is an island country in the Atlantic Ocean. It is part of the Lesser Antilles of the West Indies and the easternmost island of the Caribbean region. It lies on the boundary of the South American ...
. In 1837, Featherstone Osler retired from the Navy and emigrated to Canada, becoming a "saddle-bag minister" in rural
Upper Canada
The Province of Upper Canada () was a Province, part of The Canadas, British Canada established in 1791 by the Kingdom of Great Britain, to govern the central third of the lands in British North America, formerly part of the Province of Queb ...
. When Featherstone and his bride, Ellen Free Picton, arrived in Canada, they were nearly shipwrecked again on Egg Island in the
Gulf of Saint Lawrence
The Gulf of St. Lawrence is a gulf that fringes the shores of the provinces of Quebec, New Brunswick, Nova Scotia, Prince Edward Island, Newfoundland and Labrador, in Canada, plus the islands Saint-Pierre and Miquelon, possessions of France, in ...
. Their children included William,
Britton Bath Osler and
Sir Edmund Boyd Osler.
Early life
William Osler was born in
Bond Head,
Canada West
The Province of Canada (or the United Province of Canada or the United Canadas) was a British colony in British North America from 1841 to 1867. Its formation reflected recommendations made by John Lambton, 1st Earl of Durham, in the Report ...
(
Ontario
Ontario is the southernmost Provinces and territories of Canada, province of Canada. Located in Central Canada, Ontario is the Population of Canada by province and territory, country's most populous province. As of the 2021 Canadian census, it ...
), on July 12, 1849, and raised after 1857 in
Dundas, Ontario
Dundas () is a community and urban district in the city of Hamilton, Ontario, Hamilton in the Canadian province of Ontario. It is nicknamed ''Valley Town'' because of its topographical location at the bottom of the Niagara Escarpment on the we ...
. He was named William after
William of Orange, who won the
Battle of the Boyne
The Battle of the Boyne ( ) took place in 1690 between the forces of the deposed King James II, and those of King William III who, with his wife Queen Mary II (his cousin and James's daughter), had acceded to the Crowns of England and Sc ...
on July 12, 1690. Osler's mother, who was very religious, prayed that he would become a priest. Osler was educated at
Trinity College School (then located in
Weston
Weston may refer to:
Places Australia
* Weston, Australian Capital Territory, a suburb of Canberra
* Weston, New South Wales
* Weston Creek, a residential district of Canberra
* Weston Park, Canberra, a park
Canada
* Weston, Nova Scotia
* W ...
, Ontario).
In 1867, Osler announced that he would follow his father's footsteps into the ministry and entered
Trinity College of the
University of Toronto
The University of Toronto (UToronto or U of T) is a public university, public research university whose main campus is located on the grounds that surround Queen's Park (Toronto), Queen's Park in Toronto, Ontario, Canada. It was founded by ...
, in the autumn. However, he became increasingly interested in medical science under the influence of
James Bovell and the Rev.
William Arthur Johnson, encouraging him to switch his career.
In 1868, Osler enrolled in the Toronto School of Medicine, a privately owned institution that was not part of the Medical Faculty of the University of Toronto. Osler lived with James Bovell for a time, and through Johnson, he was introduced to the writings of
Sir Thomas Browne
Sir Thomas Browne ( "brown"; 19 October 160519 October 1682) was an English polymath and author of varied works which reveal his wide learning in diverse fields including science and medicine, religion and the esoteric. His writings display a d ...
; his ''
Religio Medici'' caused a deep impression on him. Osler left the Toronto School of Medicine after being accepted into the
MDCM program at the
McGill University Faculty of Medicine
The Faculty of Medicine and Health Sciences is one of the constituent faculties of McGill University. It was established in 1829 after the Montreal Medical Institution was incorporated into McGill College as the college's first faculty; it was t ...
in
Montreal
Montreal is the List of towns in Quebec, largest city in the Provinces and territories of Canada, province of Quebec, the List of the largest municipalities in Canada by population, second-largest in Canada, and the List of North American cit ...
, and he received his medical degree (MDCM) in 1872.
Career
Following post-graduate training under
Rudolf Virchow
Rudolf Ludwig Carl Virchow ( ; ; 13 October 18215 September 1902) was a German physician, anthropologist, pathologist, prehistorian, biologist, writer, editor, and politician. He is known as "the father of modern pathology" and as the founder o ...
in Germany, Osler returned to the
McGill University Faculty of Medicine
The Faculty of Medicine and Health Sciences is one of the constituent faculties of McGill University. It was established in 1829 after the Montreal Medical Institution was incorporated into McGill College as the college's first faculty; it was t ...
as a professor in 1874. There he created the first formal
journal club
A journal club is a group of individuals who meet regularly to critically evaluate recent articles in the academic literature, such as the scientific literature, medical literature, or philosophy literature. Journal clubs are usually organized aro ...
, showed interest in comparative pathology, and is considered the first to have taught
veterinary pathology in North America as part of a broad understanding of disease pathogenesis. In 1884, he was appointed Chair of Clinical Medicine at the
University of Pennsylvania
The University of Pennsylvania (Penn or UPenn) is a Private university, private Ivy League research university in Philadelphia, Pennsylvania, United States. One of nine colonial colleges, it was chartered in 1755 through the efforts of f ...
in
Philadelphia
Philadelphia ( ), colloquially referred to as Philly, is the List of municipalities in Pennsylvania, most populous city in the U.S. state of Pennsylvania and the List of United States cities by population, sixth-most populous city in the Unit ...
and in 1885, was one of the seven founding members of the
Association of American Physicians
The Association of American Physicians (AAP) is an honorary medical society founded in 1885 by the Canadian physician Sir William Osler and six other distinguished physicians of his era for "the advancement of scientific and practical medicine ...
, a society dedicated to "the advancement of scientific and practical medicine." When he left Philadelphia in 1889, his farewell address, "''Aequanimitas''", was about the imperturbability (calm amid storm) and
equanimity
Equanimity is a state of psychological stability and composure which is undisturbed by the experience of or exposure to emotions, pain, or other phenomena that may otherwise cause a loss of mental balance. The virtue and value of equanimity is ...
(moderated emotion, tolerance) necessary for physicians.

In 1889, he became the first Physician-in-Chief of the new
Johns Hopkins Hospital
Johns Hopkins Hospital (JHH) is the teaching hospital and biomedical research facility of Johns Hopkins School of Medicine in Baltimore, Maryland. Founded in 1889, Johns Hopkins Hospital and its school of medicine are considered to be the foundin ...
in
Baltimore, Maryland
Baltimore is the List of municipalities in Maryland, most populous city in the U.S. state of Maryland. With a population of 585,708 at the 2020 United States census, 2020 census and estimated at 568,271 in 2024, it is the List of United States ...
. In 1893, Osler was instrumental in creating the
Johns Hopkins School of Medicine
The Johns Hopkins University School of Medicine (JHUSOM) is the medical school of Johns Hopkins University, a private research university in Baltimore, Maryland. Established in 1893 following the construction of the Johns Hopkins Hospital, th ...
and became one of the school's first professors of medicine. Osler quickly enhanced his reputation as a clinician, humanitarian, and teacher. He presided over the rapidly expanding hospital's first year of operation, when it had 220 beds and 788 patients were seen for a total of over 15,000 days of treatment. Sixteen years later, when Osler left for Oxford, over 4,200 patients were seen for a total of nearly 110,000 days of treatment.
In 1905, he was appointed to the
Regius Professor of Medicine at
Oxford
Oxford () is a City status in the United Kingdom, cathedral city and non-metropolitan district in Oxfordshire, England, of which it is the county town.
The city is home to the University of Oxford, the List of oldest universities in continuou ...
, which he held until his death. He was also a Student (
fellow
A fellow is a title and form of address for distinguished, learned, or skilled individuals in academia, medicine, research, and industry. The exact meaning of the term differs in each field. In learned society, learned or professional society, p ...
) of
Christ Church, Oxford
Christ Church (, the temple or house, ''wikt:aedes, ædes'', of Christ, and thus sometimes known as "The House") is a Colleges of the University of Oxford, constituent college of the University of Oxford in England. Founded in 1546 by Henry V ...
.
In the UK, he initiated the founding in 1907 of the Association of Physicians and was founding Senior Editor of its publication the ''
Quarterly Journal of Medicine'' until his death.

In 1911, he founded the Postgraduate Medical Association and was its first President. The same year, Osler was named a
baronet
A baronet ( or ; abbreviated Bart or Bt) or the female equivalent, a baronetess (, , or ; abbreviation Btss), is the holder of a baronetcy, a hereditary title awarded by the British Crown. The title of baronet is mentioned as early as the 14th ...
in the Coronation Honours List for his contributions to the field of medicine.
In January 1919 he was appointed President of the Fellowship of Medicine and was in October appointed founding President of the merged Fellowship of Medicine and Postgraduate Medical Association, which became the
Fellowship of Postgraduate Medicine.
The largest collection of Osler's letters and papers is at the
Osler Library of
McGill University
McGill University (French: Université McGill) is an English-language public research university in Montreal, Quebec, Canada. Founded in 1821 by royal charter,Frost, Stanley Brice. ''McGill University, Vol. I. For the Advancement of Learning, ...
in Montreal and a collection is also held at the
United States National Library of Medicine
The United States National Library of Medicine (NLM), operated by the United States federal government, is the world's largest medical library.
Located in Bethesda, Maryland, the NLM is an institute within the National Institutes of Health. I ...
in
Bethesda, Maryland
Bethesda () is an unincorporated, census-designated place in southern Montgomery County, Maryland, United States. Located just northwest of Washington, D.C., it is a major business and government center of the Washington metropolitan region ...
.
Assessment

Perhaps Osler's greatest influence on medicine was to insist that students learn from seeing and talking to patients and the establishment of the
medical residency
Residency or postgraduate training is a stage of graduate medical education. It refers to a qualified physician (one who holds the degree of MD, DO, MBBS/MBChB), veterinarian ( DVM/VMD, BVSc/BVMS), dentist ( DDS or DMD), podiatrist ( DPM), o ...
. The latter idea spread across the English-speaking world and remains in place today in most teaching hospitals. Through this system, physicians in training make up much of a teaching hospital's medical staff. The success of his residency system depended, in large part, on its pyramidal structure with many interns, fewer assistant residents and a single chief resident, who originally occupied that position for years. While at Hopkins, Osler established the full-time, sleep-in residency system whereby staff physicians lived in the administration building of the hospital. As established, the residency was open-ended, and long tenure was the rule. Physicians spent as long as seven or eight years as residents, during which time they led a restricted, almost
monastic
Monasticism (; ), also called monachism or monkhood, is a religious way of life in which one renounces worldly pursuits to devote oneself fully to spiritual activities. Monastic life plays an important role in many Christian churches, especially ...
life.
He wrote in an essay, "Books and Men", that "He who studies medicine without books sails an uncharted sea, but he who studies medicine without patients does not go to sea at all." His best-known saying was "Listen to your patient—he is telling you the diagnosis", which emphasises the importance of taking a good history.
The contribution to medical education of which he was proudest was his idea of clinical clerkship – having third- and fourth-year students work with patients on the wards. He pioneered the practice of bedside teaching, making rounds with a handful of students, demonstrating what one student referred to as his method of "incomparably thorough physical examination." Soon after arriving in Baltimore, Osler insisted that his medical students attend at bedside early in their training. By their third year they were taking patient histories, performing physicals and doing lab tests examining secretions, blood and excreta.

He reduced the role of
didactic
Didacticism is a philosophy that emphasises instructional and informative qualities in literature, art, and design. In art, design, architecture, and landscape, didacticism is a conceptual approach that is driven by the urgent need to explain.
...
lectures and once said he hoped his tombstone would say only, "He brought medical students into the wards for bedside teaching." He also said, "I desire no other epitaph ... than the statement that I taught medical students in the wards, as I regard this as by far the most useful and important work I have been called upon to do." Osler fundamentally changed medical teaching in North America, and this influence, helped by a few such as the Dutch
internist
Internal medicine, also known as general medicine in Commonwealth nations, is a medical specialty for medical doctors focused on the prevention, diagnosis, and treatment of diseases in adults. Its namesake stems from "treatment of diseases of th ...
P. K. Pel, spread to medical schools across the globe.
Osler was a prolific author and a great collector of books and other material relevant to the
history of medicine
The history of medicine is both a study of medicine throughout history as well as a multidisciplinary field of study that seeks to explore and understand medical practices, both past and present, throughout human societies.
The history of med ...
. He willed his library to the Faculty of Medicine of
McGill University
McGill University (French: Université McGill) is an English-language public research university in Montreal, Quebec, Canada. Founded in 1821 by royal charter,Frost, Stanley Brice. ''McGill University, Vol. I. For the Advancement of Learning, ...
where it now forms the nucleus of McGill University's
Osler Library of the History of Medicine. Osler was a strong supporter of libraries and served on the library committees at most of the universities at which he taught and was a member of the Board of Curators of the
Bodleian Library
The Bodleian Library () is the main research library of the University of Oxford. Founded in 1602 by Sir Thomas Bodley, it is one of the oldest libraries in Europe. With over 13 million printed items, it is the second-largest library in ...
in Oxford. He was instrumental in founding the
Medical Library Association in North America, alongside employee and mentee
Marcia Croker Noyes, and served as its second president from 1901 to 1904. In Britain he was the first (and only) president of the Medical Library Association of Great Britain and Ireland
and also a president of the
Bibliographical Society of London (1913).
Osler was a prolific author and public speaker and his public speaking and writing were both done in a clear, lucid style. His most famous work, ''
The Principles and Practice of Medicine'' quickly became a key text to students and clinicians alike. It continued to be published in many editions until 2001 and was translated into many languages. It is notable in part for supporting the use of
bloodletting
Bloodletting (or blood-letting) was the deliberate withdrawal of blood from a patient to prevent or cure illness and disease. Bloodletting, whether by a physician or by leeches, was based on an ancient system of medicine in which blood and othe ...
as recently as 1923. Though his own textbook was a major influence in medicine for many years, Osler described
Avicenna
Ibn Sina ( – 22 June 1037), commonly known in the West as Avicenna ( ), was a preeminent philosopher and physician of the Muslim world, flourishing during the Islamic Golden Age, serving in the courts of various Iranian peoples, Iranian ...
as the "author of the most famous medical textbook ever written". He noted that Avicenna's ''
Canon of Medicine'' remained "a medical bible for a longer time than any other work". Osler's essays were important guides to physicians. The title of his most famous essay, "''Aequanimitas''", espousing the importance of imperturbability, is the motto on the Osler family crest and is used on the Osler housestaff tie and scarf at Hopkins.
Controversies
Racism
Osler said Canada should be a "white man's country" in a 1914 speech given around the time of the
Komagata Maru incident
The ''Komagata Maru'' incident involved the Japanese steamship ''Komagata Maru'', on which a group of people from British Raj, British India attempted to migrate to Canada in April 1914, but most were denied entry and forced to return to Budge ...
involving immigration from India.
Osler wrote "I hate Latin Americans" in a letter to Henry Vining Ogden.
Under the pseudonym "Egerton Yorrick Davis", Osler mocked Indigenous people: "Every primitive tribe retains some vile animal habit not yet eliminated in the upward march of the race."
Uncovering this historical context, the journalists David Bruser and Markus Grill and the archivist
Nils Seethaler reconstruct the shipment of several indigenous skulls by Osler from Canada to Germany, which were (previously unknown) in the custody of the State Museums of Berlin.
Gerontology
Osler is well known in the field of
gerontology
Gerontology ( ) is the study of the social, culture, cultural, psychology, psychological, cognitive, and biology, biological aspects of aging. The word was coined by Ilya Ilyich Mechnikov in 1903, from the Ancient Greek, Greek ('), meaning "o ...
for the speech he gave when leaving Hopkins to become the Regius Professor of Medicine at Oxford. "The Fixed Period", given on February 22, 1905, included some controversial words about old age. Osler, who had a well-developed humorous side to his character, was in his mid-fifties when he gave the speech and in it he mentioned
Anthony Trollope
Anthony Trollope ( ; 24 April 1815 – 6 December 1882) was an English novelist and civil servant of the Victorian era. Among the best-known of his 47 novels are two series of six novels each collectively known as the ''Chronicles of Barsetshire ...
's ''
The Fixed Period'' (1882), which envisaged a college where men retired at 67 and after being given a year to settle their affairs, would be "peacefully extinguished by chloroform". He claimed that, "the effective, moving, vitalizing work of the world is done between the ages of twenty-five and forty" and it was downhill from then on.
Osler's speech was covered by the popular press which headlined their reports with "Osler recommends chloroform at sixty". The concept of mandatory euthanasia for humans after a "fixed period" (often 60 years) became a recurring theme in 20th century
science fiction
Science fiction (often shortened to sci-fi or abbreviated SF) is a genre of speculative fiction that deals with imaginative and futuristic concepts. These concepts may include information technology and robotics, biological manipulations, space ...
—for example,
Isaac Asimov
Isaac Asimov ( ; – April 6, 1992) was an Russian-born American writer and professor of biochemistry at Boston University. During his lifetime, Asimov was considered one of the "Big Three" science fiction writers, along with Robert A. H ...
's 1950 novel ''
Pebble in the Sky'' and
Half a Life (Star Trek: The Next Generation). In the 3rd edition of his Textbook, he also coined the description of
pneumonia
Pneumonia is an Inflammation, inflammatory condition of the lung primarily affecting the small air sacs known as Pulmonary alveolus, alveoli. Symptoms typically include some combination of Cough#Classification, productive or dry cough, ches ...
as "the friend of the aged" since it allowed elderly individuals a quick, comparatively painless death: "Taken off by it in an acute, short, not often painful illness, the old man escapes those 'cold gradations of decay' so distressing to himself and his friends." Coincidentally, Osler himself died of pneumonia.
Personal life and family
An inveterate prankster, he wrote several humorous pieces under the pseudonym "Egerton Yorrick Davis", even fooling the editors of the ''Philadelphia Medical News'' into publishing a report on the extremely rare phenomenon of ''
penis captivus
Penis captivus is a supposed occurrence during human sexual intercourse when the muscles in the vagina clamp down on the Human penis, penis much more firmly than usual, making it impossible for the penis to be withdrawn from the vagina. According ...
'', on December 13, 1884. The letter was apparently a response to a report on the phenomenon of
vaginismus reported three weeks previously in the ''Philadelphia Medical News'' by Osler's colleague Theophilus Parvin.
[Egerton Y. Davis]
, Chris Nickson, ''Life in the Fastlane'', November 16, 2008 Davis, a prolific writer of letters to medical societies, purported to be a retired U.S. Army surgeon living in Caughnawaga,
Quebec
Quebec is Canada's List of Canadian provinces and territories by area, largest province by area. Located in Central Canada, the province shares borders with the provinces of Ontario to the west, Newfoundland and Labrador to the northeast, ...
(now
Kahnawake
The Kahnawake Mohawk Territory (, in the Mohawk language, ''Kahnawáˀkye'' in Tuscarora) is a First Nations reserve of the Mohawks of Kahnawà:ke on the south shore of the Saint Lawrence River in Quebec, Canada, across from Montreal. Establi ...
), author of a fake paper on the
obstetrical habits of
Native American tribes that was intended as a joke on his rival, Dr. William A. Molson. The piece was never published in Osler's lifetime, nor was it intended to be published; Osler knew the content was outrageous, but he wanted to make a fool of Molson by getting the piece to the brink of publication in the ''Montreal Medical Journal'', of which Molson was the editor. Osler would enhance Davis's myth by signing Davis's name to
hotel registers and
medical conference attendance lists; Davis was eventually reported drowned in the
Lachine Rapids
The Lachine Rapids () are a series of rapids on the Saint Lawrence River, between the Island of Montreal and the South Shore. They are confusingly located near the borough of Lasalle and not Lachine.
The Lachine Rapids contain large standi ...
in 1884.
Throughout his life, Osler was a great admirer of the 17th century physician and philosopher Sir
Thomas Browne
Sir Thomas Browne ( "brown"; 19 October 160519 October 1682) was an English polymath and author of varied works which reveal his wide learning in diverse fields including science and medicine, religion and the esoteric. His writings display a d ...
.
He died at the age of 70, on December 29, 1919, in
Oxford
Oxford () is a City status in the United Kingdom, cathedral city and non-metropolitan district in Oxfordshire, England, of which it is the county town.
The city is home to the University of Oxford, the List of oldest universities in continuou ...
, during the
Spanish flu epidemic, most likely of complications from undiagnosed
bronchiectasis
Bronchiectasis is a disease in which there is permanent enlargement of parts of the bronchi, airways of the lung. Symptoms typically include a chronic cough with sputum, mucus production. Other symptoms include shortness of breath, hemoptysis, co ...
. His wife, Grace, lived another nine years but succumbed to a series of strokes. Sir William and Lady Osler's ashes now rest in a niche in the
Osler Library at
McGill University
McGill University (French: Université McGill) is an English-language public research university in Montreal, Quebec, Canada. Founded in 1821 by royal charter,Frost, Stanley Brice. ''McGill University, Vol. I. For the Advancement of Learning, ...
. They had two sons, one of whom died shortly after birth. The other, Edward Revere Osler, was mortally wounded in combat in
World War I
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
at the age of 21, during the 3rd battle of
Ypres
Ypres ( ; ; ; ; ) is a Belgian city and municipality in the province of West Flanders. Though
the Dutch name is the official one, the city's French name is most commonly used in English. The municipality comprises the city of Ypres/Ieper ...
(also known as the
battle of Passchendaele
The Third Battle of Ypres (; ; ), also known as the Battle of Passchendaele ( ), was a campaign of the First World War, fought by the Allies of World War I, Allies against the German Empire. The battle took place on the Western Front (World Wa ...
). At the time of his death in August 1917, he was a
second lieutenant in the (British) Royal Field
Artillery
Artillery consists of ranged weapons that launch Ammunition, munitions far beyond the range and power of infantry firearms. Early artillery development focused on the ability to breach defensive walls and fortifications during sieges, and l ...
; Lt. Osler's grave is in the Dozinghem Military Cemetery in West
Flanders
Flanders ( or ; ) is the Dutch language, Dutch-speaking northern portion of Belgium and one of the communities, regions and language areas of Belgium. However, there are several overlapping definitions, including ones related to culture, la ...
, Belgium. According to one biographer, Osler was emotionally crushed by the loss; he was particularly anguished by the fact that his influence had been used to procure a military commission for his son, who had mediocre eyesight.
Lady Osler (Grace Revere) was born in Boston in 1854; her paternal great-grandfather was
Paul Revere
Paul Revere (; December 21, 1734 O.S. (January 1, 1735 N.S.)May 10, 1818) was an American silversmith, military officer and industrialist who played a major role during the opening months of the American Revolutionary War in Massachusetts, ...
. In 1876, she married Samuel W. Gross, chairman of surgery at Jefferson Medical College in Philadelphia and son of Dr.
Samuel D. Gross. Gross died in 1889 and in 1892 she married William Osler who was then professor of medicine at Johns Hopkins University.
Osler was a founding donor of the
American Anthropometric Society, a group of academics who pledged to donate their brains for scientific study. His brain was donated to the American Anthropometric Society after his death and is currently stored at the
Wistar Institute in Philadelphia. A study of his brain, conducted in 1927, concluded that there were differences between the brains of the highly intelligent and normal brains. In April 1987 it was taken to the
Mütter Museum, on 22nd Street near Chestnut in
Philadelphia
Philadelphia ( ), colloquially referred to as Philly, is the List of municipalities in Pennsylvania, most populous city in the U.S. state of Pennsylvania and the List of United States cities by population, sixth-most populous city in the Unit ...
where it was displayed during the annual meeting of the American Osler Society. He was elected as a member to the
American Philosophical Society
The American Philosophical Society (APS) is an American scholarly organization and learned society founded in 1743 in Philadelphia that promotes knowledge in the humanities and natural sciences through research, professional meetings, publicat ...
in 1885.
In 1925, a biography of William Osler was written by
Harvey Cushing
Harvey Williams Cushing (April 8, 1869 – October 7, 1939) was an American neurosurgery, neurosurgeon, pathologist, writer, and draftsman. A pioneer of brain surgery, he was the first exclusive neurosurgeon and the first person to describe Cush ...
, who received the 1926
Pulitzer Prize
The Pulitzer Prizes () are 23 annual awards given by Columbia University in New York City for achievements in the United States in "journalism, arts and letters". They were established in 1917 by the will of Joseph Pulitzer, who had made his fo ...
for the work. A later biography by
Michael Bliss
John William Michael Bliss (January 18, 1941 – May 18, 2017) was a Canadian historian and author. Though his early works focused on business and political history, he also wrote biographies of physicians Frederick Banting, William Osler and Har ...
was published in 1999.
In 1994 Osler was inducted into the
Canadian Medical Hall of Fame
__NOTOC__
The Canadian Medical Hall of Fame is a Canadian charitable organization, founded in 1994, that honours Canadians who have contributed to the understanding of disease and improving the health of people. It has an exhibit hall in London, ...
.
Eponyms
Osler lent his
name
A name is a term used for identification by an external observer. They can identify a class or category of things, or a single thing, either uniquely, or within a given context. The entity identified by a name is called its referent. A person ...
to a number of diseases, signs and symptoms, as well as to a number of buildings that have been named for him.
Conditions
*
Osler's sign is an artificially high systolic
blood pressure
Blood pressure (BP) is the pressure of Circulatory system, circulating blood against the walls of blood vessels. Most of this pressure results from the heart pumping blood through the circulatory system. When used without qualification, the term ...
reading due to the calcification of
atherosclerotic
Atherosclerosis is a pattern of the disease arteriosclerosis, characterized by development of abnormalities called lesions in walls of arteries. This is a chronic inflammatory disease involving many different cell types and is driven by elev ...
arteries
An artery () is a blood vessel in humans and most other animals that takes oxygenated blood away from the heart in the systemic circulation to one or more parts of the body. Exceptions that carry deoxygenated blood are the pulmonary arteries in ...
*
Osler's nodes are raised tender nodules on the pulps of fingertips or toes, suggestive of
subacute bacterial endocarditis. Osler described them as "ephemeral spots of a painful nodular erythema, chiefly in the skin of the hands and feet." Osler nodes are usually painful, as opposed to
Janeway lesions which are due to emboli and are painless.
*
Osler–Weber–Rendu disease (also known as ''
hereditary hemorrhagic telangiectasia
Hereditary hemorrhagic telangiectasia (HHT), also known as Osler–Weber–Rendu disease and Osler–Weber–Rendu syndrome, is a rare autosomal dominant genetic disorder that leads to abnormal blood vessel formation in the Human skin, skin, muco ...
'') is a syndrome of multiple
vascular Vascular can refer to:
* blood vessels, the vascular system in animals
* vascular tissue
Vascular tissue is a complex transporting tissue, formed of more than one cell type, found in vascular plants. The primary components of vascular tissue ...
malformations on the skin, in the nasal and oral mucosa, in the lungs and elsewhere.
*
Osler–Vaquez disease (also known as Polycythemia vera)
*
Osler–Libman–Sacks syndrome is an atypical, verrucous, nonbacterial, valvular and mural
endocarditis
Endocarditis is an inflammation of the inner layer of the heart, the endocardium. It usually involves the heart valves. Other structures that may be involved include the interventricular septum, the chordae tendineae, the mural endocardium, o ...
. Final stage of systemic
lupus erythematosus
is a collection of autoimmune diseases in which the human immune system becomes hyperactive and attacks healthy tissues. Symptoms of these diseases can affect many different body systems, including joints, skin, kidneys, blood cells, heart, ...
.
* Osler's manoeuvre: in
pseudohypertension, the blood pressure as measured by the
sphygmomanometer
A sphygmomanometer ( ), also known as a blood pressure monitor, blood pressure machine, or blood pressure gauge, is a device used to measure blood pressure, composed of an inflatable cuff to collapse and then release the artery under the cuff i ...
is artificially high because of arterial wall calcification. Osler's manoeuvre takes a patient who has a palpable, although pulseless,
radial artery
In human anatomy, the radial artery is the main artery of the lateral aspect of the forearm.
Structure
The radial artery arises from the bifurcation of the brachial artery in the antecubital fossa. It runs distally on the anterior part of the ...
while the blood pressure cuff is inflated above
systolic pressure; thus they are considered to have "Osler's sign".
*Osler's rule: States that a neurological defect has to be related to a specific lesion, in contrast to
Hickam's dictum
Hickam's dictum is a medical principle that a patient's symptoms could be caused by several diseases. It is a counterargument to misapplying Occam's razor in the medical profession. A common version of Hickam's dictum states: "A man can have as man ...
, which states that the neurological defect can be due to several lesions.
* Osler's syndrome is a syndrome of recurrent episodes of colic pain, with typical radiation to back, cold shiverings and fever; due to the presence in
Vater's diverticulum of a free-moving
gallstone
A gallstone is a stone formed within the gallbladder from precipitated bile components. The term cholelithiasis may refer to the presence of gallstones or to any disease caused by gallstones, and choledocholithiasis refers to the presence of ...
which is larger than the orifice.
* Osler's triad (also known as Austrian Syndrome): association of
pneumonia
Pneumonia is an Inflammation, inflammatory condition of the lung primarily affecting the small air sacs known as Pulmonary alveolus, alveoli. Symptoms typically include some combination of Cough#Classification, productive or dry cough, ches ...
,
endocarditis
Endocarditis is an inflammation of the inner layer of the heart, the endocardium. It usually involves the heart valves. Other structures that may be involved include the interventricular septum, the chordae tendineae, the mural endocardium, o ...
, and
meningitis
Meningitis is acute or chronic inflammation of the protective membranes covering the brain and spinal cord, collectively called the meninges. The most common symptoms are fever, intense headache, vomiting and neck stiffness and occasion ...
.
Zoological taxonomy
* Sphryanura osleri is a
trematode
Trematoda is a Class (biology), class of flatworms known as trematodes, and commonly as flukes. They are obligate parasite, obligate Endoparasites, internal parasites with a complex biological life cycle, life cycle requiring at least two Host ( ...
worm found in the gills of a newt.
* Oslerus osleri is a
metastrongyloid nematode lungworm parasite of wild and domestic canids. Osler discovered the parasite while teaching comparative pathology at McGill.
Buildings

* Osler Building at The
Johns Hopkins Hospital
Johns Hopkins Hospital (JHH) is the teaching hospital and biomedical research facility of Johns Hopkins School of Medicine in Baltimore, Maryland. Founded in 1889, Johns Hopkins Hospital and its school of medicine are considered to be the foundin ...
currently The Johns Hopkins Hospital Human Resources. Until 2012 the Medical Intensive Care Unit (MICU) was located on the 7th floor
*
Sir William Osler Elementary School – Elementary School in
Vancouver, British Columbia
Vancouver is a major city in Western Canada, located in the Lower Mainland region of British Columbia. As the List of cities in British Columbia, most populous city in the province, the 2021 Canadian census recorded 662,248 people in the cit ...
* Ecole Sir William Osler School – Elementary School
Winnipeg
Winnipeg () is the capital and largest city of the Provinces and territories of Canada, Canadian province of Manitoba. It is centred on the confluence of the Red River of the North, Red and Assiniboine River, Assiniboine rivers. , Winnipeg h ...
,
Manitoba
Manitoba is a Provinces and territories of Canada, province of Canada at the Centre of Canada, longitudinal centre of the country. It is Canada's Population of Canada by province and territory, fifth-most populous province, with a population ...
*
Sir William Osler Elementary School –
HWDSB Elementary School in
Dundas, Ontario
Dundas () is a community and urban district in the city of Hamilton, Ontario, Hamilton in the Canadian province of Ontario. It is nicknamed ''Valley Town'' because of its topographical location at the bottom of the Niagara Escarpment on the we ...
* Sir William Osler High School,
Agincourt area of Scarborough in what is now
Toronto
Toronto ( , locally pronounced or ) is the List of the largest municipalities in Canada by population, most populous city in Canada. It is the capital city of the Provinces and territories of Canada, Canadian province of Ontario. With a p ...
, Ontario
* Sir William Osler Public School
Simcoe County District School Board
Simcoe County District School Board (SCDSB, known as English-language Public District School Board No. 17 and Simcoe County Board Of Education prior to 1999) is an Ontario, Canada, English speaking public school board, serving Simcoe County. The ...
Elementary School in
Bradford West Gwillimbury, Ontario and 3 kilometres away from his birthplace, Bond Head, Ontario
*
Osler Library of the History of Medicine,
McGill University
McGill University (French: Université McGill) is an English-language public research university in Montreal, Quebec, Canada. Founded in 1821 by royal charter,Frost, Stanley Brice. ''McGill University, Vol. I. For the Advancement of Learning, ...
, Montreal. Osler left his 8000 volume collection of books on the history of medicine to his ''alma mater''. The library now holds over 100,000 volumes and is Canada's ''de facto'' 'national library of the history of medicine'
* ''Promenade Sir-William-Osler'' (Formerly the upper section of rue Drummond.) adjacent to the campus of
McGill University
McGill University (French: Université McGill) is an English-language public research university in Montreal, Quebec, Canada. Founded in 1821 by royal charter,Frost, Stanley Brice. ''McGill University, Vol. I. For the Advancement of Learning, ...
in
Montreal
Montreal is the List of towns in Quebec, largest city in the Provinces and territories of Canada, province of Quebec, the List of the largest municipalities in Canada by population, second-largest in Canada, and the List of North American cit ...
, Quebec and leading to the McIntyre Medical Sciences Building, which houses the ''
Osler Library of the History of Medicine''
*
William Osler Health System
William Osler Health System, formerly William Osler Health Centre, is a hospital network in Ontario, Canada that serves the city of Brampton, Ontario, Brampton and the northern portion of the western Toronto district of Etobicoke. The network i ...
1998 near
Brampton, Ontario
Brampton is a city in the Canadian Provinces and territories of Canada, province of Ontario, and the regional seat of the Regional Municipality of Peel. It is part of the Greater Toronto Area (GTA) and is a List of municipalities in Ontario#L ...
* Osler House is the student mess for clinical medical students of
Oxford University
The University of Oxford is a collegiate research university in Oxford, England. There is evidence of teaching as early as 1096, making it the oldest university in the English-speaking world and the second-oldest continuously operating u ...
and is found at the
John Radcliffe Hospital
John Radcliffe Hospital (informally known as the JR or the John Radcliffe) is a large tertiary teaching hospital in Oxford, England. It forms part of Oxford University Hospitals NHS Foundation Trust and is named after John Radcliffe (physician) ...
in Oxford
* Osler Ward is the Respiratory Medicine ward of the
John Radcliffe Hospital
John Radcliffe Hospital (informally known as the JR or the John Radcliffe) is a large tertiary teaching hospital in Oxford, England. It forms part of Oxford University Hospitals NHS Foundation Trust and is named after John Radcliffe (physician) ...
in Oxford.
* Osler House is also the name of the old Observer's House, next to the
Radcliffe Observatory in
Green Templeton College, Oxford, a
Grade I listed building
In the United Kingdom, a listed building is a structure of particular architectural or historic interest deserving of special protection. Such buildings are placed on one of the four statutory lists maintained by Historic England in England, Hi ...
* Osler House is one of the two undergraduate hostels of the
JIPMER medical school in
Puducherry, India
* Osler Textbook Room 1999 at
Johns Hopkins Hospital
Johns Hopkins Hospital (JHH) is the teaching hospital and biomedical research facility of Johns Hopkins School of Medicine in Baltimore, Maryland. Founded in 1889, Johns Hopkins Hospital and its school of medicine are considered to be the foundin ...
in the room in the Billings Building where Osler wrote "Principles and Practice of Medicine". It houses a collection of Osler memorabilia
* Osler Center for Clinical Excellence 2002 devoted to teaching "the basic elements of a sound doctor patient relationship"
* Osler Hall is Main Hall of "Med Chi" o
Medical and Chirurgical Faculty, the Maryland State Medical Society located on Cathedral Street in
Baltimore
Baltimore is the most populous city in the U.S. state of Maryland. With a population of 585,708 at the 2020 census and estimated at 568,271 in 2024, it is the 30th-most populous U.S. city. The Baltimore metropolitan area is the 20th-large ...
. The Med Chi House of Delegates meets and deliberates in Osler Hall wherein hang numerous portraits of famous
Maryland
Maryland ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic region of the United States. It borders the states of Virginia to its south, West Virginia to its west, Pennsylvania to its north, and Delaware to its east ...
physicians including a large portrait of Osler
*
Osler House (a medical residence) in
Townsville
The City of Townsville is a city on the north-eastern coast of Queensland, Australia. With a population of 201,313 as of 2024, it is the largest settlement in North Queensland and Northern Australia (specifically, the parts of Australia north of ...
, Queensland, Australia is believed to be named after him
Osler House Osler's childhood home in Dundas, Ontario.
* Osler Parking Structure and Osler Lane, at
University of California, San Diego
The University of California, San Diego (UC San Diego in communications material, formerly and colloquially UCSD) is a public university, public Land-grant university, land-grant research university in San Diego, California, United States. Es ...
were changed following a petition submitted by a Native American medical student from the
Pauma Band of Luiseno Mission Indians in 2021.
Awards
* American Association for the
History of medicine
The history of medicine is both a study of medicine throughout history as well as a multidisciplinary field of study that seeks to explore and understand medical practices, both past and present, throughout human societies.
The history of med ...
, William Osler Medal.
* Osler Library, McGill University. Pam and
Rolando Del Maestro William Osler Medical Students Essay Awards.
* Osler Lecture at the
Worshipful Society of Apothecaries
The Worshipful Society of Apothecaries of London is one of the livery companies of the City of London. It is one of the largest livery companies (with over 1,600 members in 2012) and ranks 58th in their order of precedence.
The society is a me ...
.
* Student Award in Oslerian Medicine
In popular culture
Stewart Arnott portrays Osler in episode 5 of season 11 "
Dr. Osler Regrets" (October 23, 2017) of the
Canadian television
Television in Canada officially began with the sign-on of the nation's first television stations in Montreal and Toronto in 1952. As with most media in Canada, the television industry, and the television programming available in that country, ...
period
detective series ''
Murdoch Mysteries
''Murdoch Mysteries'' is a Canadian television drama series that premiered on Citytv on January 20, 2008, and currently airs on CBC. The series is based on characters from the ''Detective Murdoch'' novels by Maureen Jennings and stars Yannick ...
''.
References
Further reading
* Borghi, Luca. ''Osler and Italy. An intermittent love story'', Amazon KDP, 2019, pp. 190, ISBN 9781701243002
*
Celebrating the Contributions of William OslerAlan Mason Chesney Medical Archives1999.
Johns Hopkins Medical Institutionsat Library and Archives Canada.
*Kingsbury, Mary. “Book Collector, Bibliographer, and Benefactor of Libraries: Sir William Osler.” ''The Journal of Library History.'' 16 no. 1 (1981): 187–98.
*Lyons, C. (2015). “The Touch Divine of Noble Natures Gone”: Sir William Osler as a Book Collector. ''Papers of the Bibliographical Society of Canada/Cahiers de La Société Bibliographique Du Canada'', 53(2), 209–232.
* The Introduction and other editorial matter is freely availabl
*
*
External links
Sir William Oslerin the
US National Library of Medicine's ''Profiles in Science''
*
Sir William Osler Collectionat the
Osler Library of the History of Medicine,
McGill University
McGill University (French: Université McGill) is an English-language public research university in Montreal, Quebec, Canada. Founded in 1821 by royal charter,Frost, Stanley Brice. ''McGill University, Vol. I. For the Advancement of Learning, ...
Harvey Cushing Fondsat the
Osler Library of the History of Medicine contains letters by Osler compiled during the writing of Cushing's biography of Osler.
*
William Osler Photo Collection Osler Library of the History of Medicine
Sir William Osler– ''
The Canadian Encyclopedia
''The Canadian Encyclopedia'' (TCE; ) is the national encyclopedia of Canada, published online by the Toronto-based historical organization Historica Canada, with financial support by the federal Department of Canadian Heritage and Society of Com ...
''
Osler Library, brief biography of William Osler*
*
*
The Student Life Essay by Osler at ArtBeatfrom the Alan Mason Chesney Medical Archives of the
Johns Hopkins Medical Institutions.
Biography on WhoNamedIt.comBiography from Osler House, Oxford, focusing on his Oxford yearsOsler House – Dundas – B&B, Meetings, Celebrations, Receptions, Retreats
at 13
Norham Gardens, owned by Sir William Osler while Regius Professor of Medicine at
Oxford University
The University of Oxford is a collegiate research university in Oxford, England. There is evidence of teaching as early as 1096, making it the oldest university in the English-speaking world and the second-oldest continuously operating u ...
(information from
Green Templeton College, Oxford)
The American Osler SocietyThe Osler Club of London(from
Johns Hopkins
Johns Hopkins (May 19, 1795 – December 24, 1873) was an American merchant, investor, and philanthropist. Born on a plantation, he left his home to start a career at the age of 17, and settled in Baltimore, Maryland, where he remained for mos ...
)
Systemofmedicine.com, Oslerian medical education resource
William Osler Health Centre*
{{DEFAULTSORT:Osler, William
1849 births
1919 deaths
Deaths from the Spanish flu pandemic in England
Baronets in the Baronetage of the United Kingdom
Canadian baronets recommended by the British government
Book and manuscript collectors
Canadian expatriate academics in the United States
Canadian medical researchers
Physicians from Ontario
Fellows of Christ Church, Oxford
Johns Hopkins University faculty
Johns Hopkins Hospital physicians
Members of the American Anthropometric Society
McGill University Faculty of Medicine alumni
Pre-Confederation Ontario people
Trinity College (Canada) alumni
University of Pennsylvania faculty
People from Dundas, Ontario
Persons of National Historic Significance (Canada)
Regius Professors of Medicine (University of Oxford)
Fellows of the Royal Society
Canadian people of English descent
Fellows of the Royal College of Physicians
Presidents of the History of Medicine Society
Presidents of the American Pediatric Society
Canadian expatriates in Germany
Canadian expatriates in England
Members of the American Philosophical Society
Presidents of the Classical Association
American medical writers
Osler family
People from Bradford West Gwillimbury
Presidents of the Bibliographical Society