is a member of the

Imperial House of Japan The , also referred to as the Imperial Family or the House of Yamato, comprises those members of the extended family of the reigning Emperor of Japan who undertake official and public duties. Under the present Constitution of Japan, the Emperor i ...

and the younger brother of Emperor emeritus Akihito. He is the second son and sixth born child of Emperor Shōwa and Empress Kōjun and is third in

line Line most often refers to: * Line (geometry), object with zero thickness and curvature that stretches to infinity * Telephone line, a single-user circuit on a telephone communication system Line, lines, The Line, or LINE may also refer to: Art ...

to the Chrysanthemum Throne. Nobody follows Prince Hitachi in the line of succession. He is mainly known for philanthropic activities and his research on the causes of cancer.

Early life and education

Prince Masahito and Princess Takako 1952-12

Born at Tokyo Imperial Palace in

Tokyo Tokyo (; ja, 東京, , ), officially the Tokyo Metropolis ( ja, 東京都, label=none, ), is the capital and largest city of Japan. Formerly known as Edo, its metropolitan area () is the most populous in the world, with an estimated 37.46 ...

, Masahito held the childhood appellation . Masahito received his primary and secondary schooling at the Gakushūin Peers' School. In late 1944, the

Imperial Household Ministry The (IHA) is an agency of the government of Japan in charge of state matters concerning the Imperial Family, and also the keeping of the Privy Seal and State Seal of Japan. From around the 8th century AD, up until the Second World War, it ...

evacuated Prince Yoshi and the Crown Prince to Nikkō, to escape the American

bombing of Tokyo The was a series of firebombing air raids by the United States Army Air Force during the Pacific campaigns of World War II. Operation Meetinghouse, which was conducted on the night of 9–10 March 1945, is the single most destructive bombi ...

. After the war, from 1947 to 1950, Mrs.

Elizabeth Gray Vining Elizabeth Janet Gray Vining (October 6, 1902 – November 27, 1999) was an American professional librarian and author who tutored Emperor Akihito of Japan in English while he was crown prince. She was also a noted author, whose children's book ...

tutored both princes and their sisters, the Princesses Kazuko, Atsuko, and Takako, in the English language. Her account of the experience is entitled ''Windows for the Crown Prince'' (1952). Prince Yoshi received his undergraduate degree in chemistry from the Faculty of Science at

Gakushuin University is a private university in Mejiro, Toshima Ward, Tokyo. It was re-established after World War II as an affiliate of the Gakushūin School Corporation. The privatized successor to the original Gakushūin University (or "Peers School") was est ...

in 1958. He subsequently did postgraduate work in the Faculty of Science at Tokyo University. In 1969, he became a Research Associate of the

Japanese Foundation for Cancer Research The (JFCR) is a non-profit cancer research organization based in Ariake, Tokyo. The JFCR was founded in 1908 as the first Japanese organization specializing in cancer by Katsusaburō Yamagiwa and his supporters. The Cancer Institute and its at ...

specializing in the study of cellular division. The results of his research have been reported in the technical journals of the Japanese Cancer Association, as well as of the American Association for Cancer Research. In 1997, Prince Hitachi received an

honorary doctorate An honorary degree is an academic degree for which a university (or other degree-awarding institution) has waived all of the usual requirements. It is also known by the Latin phrases ''honoris causa'' ("for the sake of the honour") or ''ad hono ...

from

George Washington University , mottoeng = "God is Our Trust" , established = , type = Private federally chartered research university , academic_affiliations = , endowment = $2.8 billion (2022) , presi ...

in the United States, and in April 2001 received another from the

University of Minnesota The University of Minnesota, formally the University of Minnesota, Twin Cities, (UMN Twin Cities, the U of M, or Minnesota) is a public land-grant research university in the Twin Cities of Minneapolis and Saint Paul, Minnesota, United States. ...

. In March 1999, he became an honorary member of the German Association for Cancer Research, in recognition of his significant scientific contributions to the field of cancer research.

Marriage

On 30 September 1964, the Prince married Hanako Tsugaru (born 19 July 1940), fourth daughter of the late Yoshitaka Tsugaru, a former

count Count (feminine: countess) is a historical title of nobility in certain European countries, varying in relative status, generally of middling rank in the hierarchy of nobility. Pine, L. G. ''Titles: How the King Became His Majesty''. New York ...

and a descendant of the

daimyō were powerful Japanese magnates, feudal lords who, from the 10th century to the early Meiji period in the middle 19th century, ruled most of Japan from their vast, hereditary land holdings. They were subordinate to the shogun and nominall ...

of Tsugaru Domain. The following day, Emperor Shōwa granted him the title ''Hitachi-no-miya'' (Prince Hitachi), and authorization to start a new branch of the Imperial Family in celebration of his wedding. Prince and Princess Hitachi have their official residence in a palace in large gardens off Komazawadori in Higashi, Shibuya. They have no children. In September 2021, the Japanese government considered plans to amend the Imperial Household Law and allow Prince Hitachi to adopt a male member of the former shinnōke or ōke collateral branches of the imperial family in an effort to address the Japanese imperial succession debate.

Public service

Prince Hitachi is the honorary president of a wide variety of charitable organizations, especially those involving international exchange. Most recently, Prince and Princess Hitachi visited

Nicaragua Nicaragua (; ), officially the Republic of Nicaragua (), is the largest country in Central America, bordered by Honduras to the north, the Caribbean to the east, Costa Rica to the south, and the Pacific Ocean to the west. Managua is the coun ...

and

El Salvador El Salvador (; , meaning " The Saviour"), officially the Republic of El Salvador ( es, República de El Salvador), is a country in Central America. It is bordered on the northeast by Honduras, on the northwest by Guatemala, and on the south ...

, to mark the 70th anniversary of the establishment of diplomatic relations with both countries in October 2005. They also made a visit to France in September 2007 and

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = National seal , national_motto = "Firm and Happy f ...

, marking the celebration of 110 years since the establishment of a Japanese community in this country, June 2009.

Titles and styles

* 28 November 1935 – 1 October 1964: ''His Imperial Highness'' Prince Yoshi * 1 October 1964 – present: ''His Imperial Highness'' Prince Hitachi

Honours

National honours

*: Grand Cordon of the Order of the Chrysanthemum (28 November 1955)

Foreign honours

* : Knight of the

Order of the Elephant The Order of the Elephant ( da, Elefantordenen) is a Danish order of chivalry and is Denmark's highest-ranked honour. It has origins in the 15th century, but has officially existed since 1693, and since the establishment of constitutional ...

(28 September 1965) * : Knight Grand Cross of the

Order of Merit of the Italian Republic The Order of Merit of the Italian Republic ( it, Ordine al Merito della Repubblica Italiana) is the senior Italian order of merit. It was established in 1951 by the second President of the Italian Republic, Luigi Einaudi. The highest-rankin ...

(22 November 1965) * : Member of the Order of the Benevolent Ruler (19 April 1960)Omsa.org
/ref>

Honorary degree

* Chiang Mai University

Honorary positions

* Member of the Imperial House Council * President of the Japanese Society for the Preservation of Birds * President of the Japanese Society for Disabled Children * President of the Japan Institute of Invention and Innovation * President of the Japan-Denmark Society * President of the Dainippon Silk Foundation * President of the Japanese Society for Rehabilitation of Persons with Disabilities * President of the Japan Art Association * President of the Tokyo Zoological Park Society * President of Maison Franco-Japonaise * President of the Princess Takamatsu Cancer Research Fund * Honorary President of the Japan-Sweden Society * Honorary President of the Japan-Belgium Society * Honorary President of the

* Honorary President of Association Pasteur Japon * Honorary Vice-President of the Japanese Red Cross Society

Ancestry

Patrilineal descent

;Imperial House of Japan # Descent prior to Keitai is unclear to modern historians, but traditionally traced back patrilineally to Emperor Jimmu #

Emperor Keitai (died 10 March 531) was the 26th legendary emperor of Japan,Imperial Household Agency (''Kunaichō'') 継体天皇 (26)/ref> according to the traditional order of succession. No firm dates can be assigned to this emperor's life or reign, but he ...

, ca. 450–534 #

Emperor Kinmei was the 29th Emperor of Japan,Imperial Household Agency (''Kunaichō'') 欽明天皇 (29) retrieved 2013-8-22. according to the traditional order of succession. Titsingh, Isaac. (1834)pp. 34–36 Brown, Delmer. (1979) ''Gukanshō,'' pp. 261– ...

, 509–571 #

Emperor Bidatsu was the 30th Emperor of Japan,Imperial Household Agency (''Kunaichō'')敏達天皇 (30) retrieved 2013-1-31. according to the List of emperors of Japan, traditional order of succession. The years of reign of Bidatsu start in 572 and end in 58 ...

, 538–585 # Prince Oshisaka, ca. 556–??? #

Emperor Jomei was the 34th emperor of Japan,Kunaichō 斉明天皇 (34)/ref> according to the traditional order of succession. Jomei's reign spanned the years from 629 through 641. Traditional narrative Before Jomei's ascension to the Chrysanthemum Throne ...

, 593–641 # Emperor Tenji, 626–671 # Prince Shiki, ???–716 #

Emperor Kōnin was the 49th emperor of Japan, Emperor Kōnin, Tahara no Higashi Imperial Mausoleum, Imperial Household Agency according to the traditional order of succession. Kōnin's reign lasted from 770 to 781. Traditional narrative The personal name ...

, 709–786 #

Emperor Kanmu , or Kammu, was the 50th emperor of Japan, Imperial Household Agency (''Kunaichō'') 桓武天皇 (50) retrieved 2013-8-22. according to the traditional order of succession. Kanmu reigned from 781 to 806, and it was during his reign that the s ...

, 737–806 # Emperor Saga, 786–842 # Emperor Ninmyō, 810–850 # Emperor Kōkō, 830–867 #

Emperor Uda was the 59th emperor of Japan,Imperial Household Agency (''Kunaichō'') 宇多天皇 (59)/ref> according to the traditional order of succession. Uda's reign spanned the years from 887 through 897. Traditional narrative Name and legacy Befor ...

, 867–931 # Emperor Daigo, 885–930 #

Emperor Murakami was the 62nd emperor of Japan, Imperial Household Agency (''Kunaichō'') 村上天皇 (62)/ref> according to the traditional order of succession. Murakami's reign spanned the years from 946 to his death in 967. Biography Before he ascended to ...

, 926–967 #

Emperor En'yū was the 64th emperor of Japan,Imperial Household Agency (''Kunaichō'') 円融天皇 (64)/ref> according to the traditional order of succession. En'yū's reign spanned the years from 969 through 984. Biography Before his ascension to the Chry ...

, 959–991 # Emperor Ichijō, 980–1011 # Emperor Go-Suzaku, 1009–1045 #

Emperor Go-Sanjō was the 71st emperor of Japan,Imperial Household Agency (''Kunaichō'') 陽成天皇 (71)/ref> according to the traditional order of succession. Go-Sanjō's reign spanned the years from 1068 through 1073. This 11th century sovereign was named a ...

, 1034–1073 # Emperor Shirakawa, 1053–1129 #

Emperor Horikawa was the 73rd emperor of Japan,Imperial Household Agency (''Kunaichō'') 堀河天皇 (73)/ref> according to the traditional order of succession. Horikawa's reign spanned the years from 1087 through 1107. Biography Before his ascension to the C ...

, 1079–1107 #

Emperor Toba was the 74th Emperor of Japan, Imperial Household Agency (''Kunaichō'') 鳥羽天皇 (74)/ref> according to the traditional order of succession. Toba's reign spanned the years from 1107 through 1123. Genealogy Before his ascension to the C ...

, 1103–1156 # Emperor Go-Shirakawa, 1127–1192 # Emperor Takakura, 1161–1181 #

Emperor Go-Toba was the 82nd emperor of Japan, according to the traditional order of succession. His reign spanned the years from 1183 through 1198. This 12th-century sovereign was named after Emperor Toba, and ''go-'' (後), translates literally as "later"; a ...

, 1180–1239 # Emperor Tsuchimikado, 1196–1231 #

Emperor Go-Saga was the 88th emperor of Japan, according to the traditional order of succession. This reign spanned the years 1242 through 1246. This 13th-century sovereign was named after the 8th-century Emperor Saga and ''go-'' (後), translates literally as ...

, 1220–1272 # Emperor Go-Fukakusa, 1243–1304 # Emperor Fushimi, 1265–1317 # Emperor Go-Fushimi, 1288–1336 # Emperor Kōgon, 1313–1364 #

Emperor Sukō (May 25, 1334 – January 31, 1398) was the third of Emperors of Northern Court during the Period of the Northern and Southern Courts in Japan. According to pre- Meiji scholars, his reign spanned the years from 1348 through 1351.Titsingh, Isaa ...

, 1334–1398 # Prince Yoshihito Fushimi, 1351–1416 # Prince Sadafusa Fushimi, 1372–1456 #

Emperor Go-Hanazono (July 10, 1418 – January 18, 1471) was the 102nd emperor of Japan, according to the traditional order of succession.Imperial Household Agency (''Kunaichō'')後花園天皇 (102) retrieved 2013-8-28. His reign spanned the years from 1428 throug ...

, 1419–1471 # Emperor Go-Tsuchimikado, 1442–1500 # Emperor Go-Kashiwabara, 1464–1526 # Emperor Go-Nara, 1495–1557 # Emperor Ōgimachi, 1517–1593 # Prince Masahito, 1552–1586 #

Emperor Go-Yōzei was the 107th Emperor of Japan, according to the traditional order of succession. Go-Yōzei's reign spanned the years 1586 through to his abdication in 1611, corresponding to the transition between the Azuchi–Momoyama period and the Edo period ...

, 1572–1617 # Emperor Go-Mizunoo, 1596–1680 #

Emperor Reigen was the 112th emperor of Japan,Imperial Household Agency (''Kunaichō'') 霊元天皇 (112)/ref> according to the traditional order of succession.Ponsonby-Fane, Richard. (1959). ''The Imperial House of Japan'', pp. 117. Reigen's reign spanned t ...

, 1654–1732 # Emperor Higashiyama, 1675–1710 # Prince Naohito Kanin, 1704–1753 # Prince Sukehito Kanin, 1733–1794 # Emperor Kōkaku, 1771–1840 # Emperor Ninkō, 1800–1846 # Emperor Kōmei, 1831–1867 #

Emperor Meiji , also called or , was the 122nd emperor of Japan according to the traditional order of succession. Reigning from 13 February 1867 to his death, he was the first monarch of the Empire of Japan and presided over the Meiji era. He was the figur ...

, 1852–1912 #

Emperor Taishō was the 123rd Emperor of Japan, according to the traditional order of succession, and the second ruler of the Empire of Japan from 30 July 1912 until his death in 1926. The Emperor's personal name was . According to Japanese custom, while reigni ...

, 1879–1926 # Emperor Shōwa, 1901–1989 # Masahito, Prince Hitachi

References

External links

Their Imperial Highnesses Prince and Princess Hitachi
at the Imperial Household Agency website in Japan {{DEFAULTSORT:Hitachi, Prince 1935 births Japanese princes Living people People from Tokyo Gakushuin University alumni Sons of emperors 20th-century Japanese scientists 21st-century Japanese scientists Cancer researchers Tokyo University of Science alumni