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Thomas J. O'Brien

1842 – 1933

American diplomat

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About Thomas J. O'Brien

Lived 1842 – 1933 (aged 90). Thomas J. O'Brien was an American diplomat.

Thomas James O’Brien (July 30, 1842 – May 19, 1933) was a politician and diplomat from the U.S. state of Michigan. While serving as Ambassador to Japan, he, along with Japanese Minister for Foreign Affairs Hayashi Tadasu, negotiated the Gentlemen's Agreement of 1907 that addressed the issue of Japanese immigration to the United States and allowed children of Japanese immigrants to attend public schools in California.

Life O'Brien was born in Jackson, Michigan, on July 30, 1842, the son of Timothy O'Brien and Elizabeth Lander O'Brien. On September 4, 1873, he married Delia Howard (July 14, 1848 - January 22, 1926).

O'Brien was a lawyer by profession and a Republican politician. In 1883 he was an unsuccessful candidate for the office of Justice of the Michigan Supreme Court. In 1896 and 1904 he was a delegate to the Republican National Convention from Michigan.

Ambassador

O’Brien, a graduate of the University of Michigan law school, held the following posts as ambassador of the United States:

Denmark, 1905–1907 (appointed by President Theodore Roosevelt) Japan, 1907–1911 (appointed by President Theodore Roosevelt) Italy, 1911–1913 (appointed by President William Howard Taft)

Death

O’Brien died on May 19, 1933. He is buried with his wife at Oakhill Cemetery in Grand Rapids, Michigan.

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Important facts

Birth century
Occupation
Nationality
Education
University of Michigan Law School, University of Michigan
Positions held
United States Ambassador to Italy
Also known as
Thomas O'Brien

People in Thomas J. O'Brien's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Thomas J. O'Brien's

Frequently asked questions

Who was Thomas J. O'Brien?

American diplomat (1842–1933)

When was Thomas J. O'Brien born?

Thomas J. O'Brien was born on 3 July 1842 in Jackson.

When did Thomas J. O'Brien die?

Thomas J. O'Brien died on 19 May 1933.

What was Thomas J. O'Brien's occupation?

Thomas J. O'Brien was a diplomat.

What nationality was Thomas J. O'Brien?

Thomas J. O'Brien was American.

Sources & further reading

· Wikipedia: Thomas J. O'Brien

· Wikidata: Q7791121

· DBpedia: Thomas J. O'Brien (Michigan politician)

Cite this page

APA: Biography.guide. (2026). Thomas J. O'Brien. https://biography.guide/thomas-j-o-brien-diplomat/

MLA: "Thomas J. O'Brien." Biography.guide, https://biography.guide/thomas-j-o-brien-diplomat/.

Chicago: "Thomas J. O'Brien." Biography.guide. https://biography.guide/thomas-j-o-brien-diplomat/.

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