Biography.guide
Home › People › Diplomat › Iemasa Tokugawa
Portrait of Iemasa Tokugawa

Iemasa Tokugawa

1884 – 1963

Japanese politician

Don't just read it — keep itBiographies to ownE-book · Audio · Video From $7 →

About Iemasa Tokugawa

Lived 1884 – 1963 (aged 78). Iemasa Tokugawa was a Japanese diplomat and politician.

Prince also known as Iyemasa, was a Japanese political figure of the Taishō and early Shōwa periods. He was the 17th hereditary head of the former shogunal branch of the Tokugawa clan and the final President of the House of Peers in the Diet of Japan.

Biography Iemasa Tokugawa was born in what is now the Sendagaya district of Tokyo, as the eldest son of Tokugawa Iesato and his wife, Konoe Hiroko, daughter of Konoe Tadafusa. He graduated from the Faculty of Law at Tokyo Imperial University (the University of Tokyo) in 1909, and accepted a post in the diplomatic corps of Foreign Ministry the same year. In 1924, he was appointed Consul-general to the Japanese consulate in Sydney, Australia. In 1929, he was appointed Envoy to Canada and from 1937 to 1939 served as the Japanese ambassador to Turkey.

Iemasa often allied with his father Prince Tokugawa Iesato (aka Prince Iyesato Tokugawa) in promoting international goodwill projects between Japan and Europe, Canada, and United States. The Art of Peace book cover photo illustration presents Iemasa accompanying his father as his father receives an honorary doctor of laws degree from the president of the University of Southern California in 1934. During that same year, on 10 May 1934, Iyemasa was also recognized for his humanitarian and goodwill diplomatic efforts by a prominent North American University and was given an honorary doctor of laws degree from the University of British Columbia in Canada.

In 1940, on the death of his father, he inherited the title of kōshaku (, 'prince' or 'duke') under the kazoku peerage system, and a seat as a member of the House of Peers of the Diet of Japan. On 19 June 1946, he served as the President of the House of Peers, a post which he held until 2 May 1947, when the Allied occupation authorities authorized the current Constitution of Japan abolishing the House of Peers along with the Nobility.

He died of heart disease at his home in Shibuya, Tokyo, on 18 February 1963, and was posthumously awarded the Order of the Rising Sun with Paulownia Flowers, 1st class. His grave is located at the Yanaka Cemetery in Tokyo. He was succeeded as head of the Tokugawa clan by Tsunenari Tokugawa, his grandson from Yasuko Tokugawa with Matsudaira Ichiro, son of Tsuneo Matsudaira.

Family Father: Tokugawa Iesato Mother: Konoe Hiroko (1867-1944) Wife: Naoko Tokugawa (This marriage was decided by the will of Tenshō-in, who raised Tokugawa Iesato) Children Iehide Tokugawa (1912-1936) Toyoko Tokugawa married Ichiro Matsudaira, son of Tsuneo Matsudaira Toshiko Tokugawa married Uesugi Takanori Junko Tokugawa married Hoshina Mitsumasa Grandchild: Tsunenari Tokugawa from Toyoko Tokugawa

Honours Japanese honours Medal with Dark Blue Ribbon (26 August 1942) Grand Cordon of the Order of the Rising Sun, first class (18 February 1963, upon death)

Foreign honours King George V Coronation Medal (5 October 1911) Officer of the Most Excellent Order of the British Empire (OBE) (21 February 1919) Order of the Precious Brilliant Golden Grain (Republic of China) (21 May 1921) Knight Commander of the Royal Victorian Order (KCVO) (29 July 1929)

Biography shop

Don’t just read it —
keep it.

Full-length biographies made to live with: read them, listen on the way to work, watch them tonight.

  • E-book
  • Audio
  • Video
Browse the shop — from $7

Instant download · yours to keep · every purchase keeps this site free

Important facts

Birth century
Education
University of Tokyo, Faculty of Law, Graduate Schools for Law and Politics
Positions held
Ambassador, Member of the House of Peers
Awards
Order of the Rising Sun, 1st class; Order of the Sacred Treasure, 4th class; Order of the Sacred Treasure, 6th class; Medal with Dark Blue Ribbon
Also known as
Tokugawa Iemasa

People in Iemasa Tokugawa's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Iemasa Tokugawa's

Frequently asked questions

Who was Iemasa Tokugawa?

Japanese politician (1884-1963)

When was Iemasa Tokugawa born?

Iemasa Tokugawa was born on 23 March 1884 in Shibuya.

When did Iemasa Tokugawa die?

Iemasa Tokugawa died on 18 February 1963 in Shibuya.

What was Iemasa Tokugawa's occupation?

Iemasa Tokugawa was a diplomat and politician.

What nationality was Iemasa Tokugawa?

Iemasa Tokugawa was Japanese.

Sources & further reading

· Wikipedia: Iemasa Tokugawa

· Wikidata: Q277171

· DBpedia: Iemasa Tokugawa

Cite this page

APA: Biography.guide. (2026). Iemasa Tokugawa. https://biography.guide/iemasa-tokugawa/

MLA: "Iemasa Tokugawa." Biography.guide, https://biography.guide/iemasa-tokugawa/.

Chicago: "Iemasa Tokugawa." Biography.guide. https://biography.guide/iemasa-tokugawa/.

Data last updated: 2026-09-20 · Spot an error? Report a correction.

Page generated 2026-09-27 05:20 UTC