Tomomi Iwakura
Tomomi Iwakura was born into Kyoto’s court aristocracy in 1825 and adopted into the Iwakura family. As a chamberlain to Emperor Komei, he initially opposed imperial approval of the American commercial treaty and promoted reconciliation between court and shogunate. Political opponents forced him into confinement. By 1867 he had joined the movement to overthrow the shogunate and helped organize the restoration of imperial rule. 1
As ambassador extraordinary, Iwakura led the mission that left Japan in December 1871 to visit Western governments, study their institutions, and discuss treaty revision. President Ulysses S. Grant received the delegation on March 4, 1872. Negotiations with Secretary of State Hamilton Fish exposed a problem: the visitors lacked sufficient authority to conclude a new treaty. Ito Hirobumi and Okubo Toshimichi returned to Japan for additional powers. Eleven rounds of talks ultimately failed to reconcile the two governments’ positions, and the mission continued to Europe without a revised American treaty. 2
After returning, Iwakura argued that domestic consolidation should take precedence over the proposed mission to Korea. In October 1873 the emperor accepted his recommendation to postpone sending Saigo Takamori, provoking a major split in the government. Iwakura survived an armed attack near the palace in January 1874; wounded, he escaped his assailants by falling down the moat’s embankment. 3, 4
He later advocated a constitution granted by the emperor, drawing on Prussian arrangements. An outline submitted in 1881 proposed two parliamentary chambers, a restricted electorate, and a cabinet separate from parliament. These proposals helped shape the eventual Meiji Constitution. Iwakura died in July 1883, before its promulgation; the emperor visited him during his final illness. 5, 6
Washington Appointments
- Japan — Ambassador, 1872
Documented Connections
Archival Sources
Archival references used in this account; descriptions and access vary by repository.
- People of the Meiji Restoration
National Diet Library
Iwakura entry; Okubo letter of October 17, 1873 - 2-4 IWAKURA Tomomi’s Conception of a Constitution
National Diet Library
Discussion of Outline of Constitution, June 1881; Ito papers 229
Sources
- IWAKURA Tomomi
Description
- Treaty revision negotiations by the Iwakura Mission and their legacy
Washington negotiations
- People of the Meiji Restoration
Iwakura entry; Okubo letter of October 17, 1873
- Mr. Bingham to Mr. Fish
FRUS 1874, printed No. 420
- 2-4 IWAKURA Tomomi’s Conception of a Constitution
Discussion of Outline of Constitution, June 1881; Ito papers 229
- Mr. Bingham to Mr. Frelinghuysen
FRUS 1883, printed No. 378
- Diplomatic Representation for Japan
Modern chief names and protocol dates through Kenichiro Sasae; Historical diplomatic representation from 1891; Embassy raised in 1906, wartime interruption, reopening in 1952
- Tomomi Iwakura — mission record (1872)
Biography checked 2026-10-28.
Notes
- Iwakura led a visiting special mission alongside Japan’s resident legation.
Cite or Reuse This Biography
Tomomi Iwakura. Chanceries Diplopedia. Biography reviewed 2026-10-28. Record d7dc4ba52448fe1b. https://chanceries.org/diplopedia/people/tomomi-iwakura-a93c1d4377/
Correction note
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