Daniel Hay du Chastelet (23 October 1596,
Laval – 20 April 1671) was a
Frenchclergyman
Clergy are formal leaders within established religions. Their roles and functions vary in different religious traditions, but usually involve presiding over specific rituals and teaching their religion's doctrines and practices. Some of the ter ...
and
mathematician
A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems.
Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change.
History
On ...
. His brother
Paul Hay du Chastelet was also a writer.
Biography
Member of the ancient
Breton
Breton most often refers to:
*anything associated with Brittany, and generally
** Breton people
** Breton language, a Southwestern Brittonic Celtic language of the Indo-European language family, spoken in Brittany
** Breton (horse), a breed
**Ga ...
noble family of the
Hay des Nétumières. He was the parish priest of
Andouillé, doctor in
theology
Theology is the systematic study of the nature of the divine and, more broadly, of religious belief. It is taught as an academic discipline, typically in universities and seminaries. It occupies itself with the unique content of analyzing the ...
at the Paris Faculty and
abbot
Abbot is an ecclesiastical title given to the male head of a monastery in various Western religious traditions, including Christianity. The office may also be given as an honorary title to a clergyman who is not the head of a monastery. The ...
of
Notre-Dame de Chambon Abbey. He was also the
Dean
Dean may refer to:
People
* Dean (given name)
* Dean (surname), a surname of Anglo-Saxon English origin
* Dean (South Korean singer), a stage name for singer Kwon Hyuk
* Dean Delannoit, a Belgian singer most known by the mononym Dean
Titles
* ...
of the
Saint-Tugal de Laval Collegial Church from 1621 to 1671 and
prior of the
Convent of the Augustins of Vitré. He was trusted by the
Cardinal Richelieu and correspondent of
Marin Mersenne. He was elected member of the
Académie française in 1635.
Abbot of
Chambon
A chambon is a piece of horse tack. It is a strap that runs forward from the bottom of the girth or surcingle, and forks. The forks continue to a ring on either side of the bridle or halter, at the base of the crownpiece. Running through those ...
He was nominated by the King to be the abbot of the abbey on February 23, 1623, a position left vacant for him by
Georges de la Trémoille Georges may refer to:
Places
*Georges River, New South Wales, Australia
*Georges Quay (Dublin)
* Georges Township, Fayette County, Pennsylvania
Other uses
* Georges (name)
* ''Georges'' (novel), a novel by Alexandre Dumas
* "Georges" (song), a 19 ...
.
Pope Urban VIII approved this nomination by the
papal bull of the 17 of the calend of september 1623. He would occupy the title for thirty-seven years, and would reform the abbey and cancel accusations of
simony made by some of his predecessors
Death
He dies on April 20, 1671 in the
deanery of Saint-Tugal de Laval where he lived and is buried close to the main altar in the
Laval Cathedral. The chapter of the
Saint-Tugal de Laval Collegial Church was given 120
livres
The (; ; abbreviation: ₶.) was one of numerous currencies used in medieval France, and a unit of account (i.e., a monetary unit used in accounting) used in Early Modern France.
The 1262 monetary reform established the as 20 , or 80.88 gr ...
to cover the costs of the burial.
Works
He wrote a considerable amount on
mathematics, but his nephew the marquis
Paul Hay du Chastelet, knowing nothing about the subject, allegedly burnt the writings.
His only writing that survives to this day is named ''Advis a la Reyne sur la conference de Ruel'', and was written in 1649, this leaves to think that he was involved in the
Fronde
The Fronde () was a series of civil wars in France between 1648 and 1653, occurring in the midst of the Franco-Spanish War, which had begun in 1635. King Louis XIV confronted the combined opposition of the princes, the nobility, the law cour ...
and was part of the conference of the
Peace of Rueil in March 1648.
References
{{DEFAULTSORT:Chastelet
1596 births
1671 deaths
17th-century French mathematicians
Members of the Académie Française