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Clifford Patrick O'Sullivan

1897 – 1975

United States federal judge

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About Clifford Patrick O'Sullivan

Lived 1897 – 1975 (aged 77). Clifford Patrick O'Sullivan was an American lawyer and judge.

Clifford Patrick O'Sullivan (December 8, 1897 – October 7, 1975) was a United States circuit judge of the United States Court of Appeals for the Sixth Circuit and previously was a United States district judge of the United States District Court for the Eastern District of Michigan.

Education and career

Born in Chicago, Illinois, O'Sullivan received a Bachelor of Laws from Notre Dame Law School in 1920. He was in private practice in Port Huron, Michigan from 1920 to 1924, and then in Chicago until 1926, returning to Port Huron until 1957.

Federal judicial service

O'Sullivan was nominated by President Dwight D. Eisenhower on June 6, 1957, to a seat on the United States District Court for the Eastern District of Michigan vacated by Judge Arthur A. Koscinski. He was confirmed by the United States Senate on August 5, 1957, and received his commission on August 7, 1957. His service terminated on April 4, 1960, due to his elevation to the Sixth Circuit.

O'Sullivan was nominated by President Eisenhower on January 14, 1960, to a seat on the United States Court of Appeals for the Sixth Circuit vacated by Judge Charles Casper Simons. He was confirmed by the Senate on March 10, 1960, and received his commission on March 12, 1960. He assumed senior status on September 27, 1969. His service terminated on October 7, 1975, due to his death.

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Important facts

Birth century
Occupation
Nationality
Education
Notre Dame Law School
Positions held
Judge of the United States Court of Appeals for the Sixth Circuit

People in Clifford Patrick O'Sullivan's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Clifford Patrick O'Sullivan's

Frequently asked questions

Who was Clifford Patrick O'Sullivan?

United States federal judge (1897-1975)

When was Clifford Patrick O'Sullivan born?

Clifford Patrick O'Sullivan was born on 8 December 1897 in Chicago.

When did Clifford Patrick O'Sullivan die?

Clifford Patrick O'Sullivan died on 7 October 1975.

What was Clifford Patrick O'Sullivan's occupation?

Clifford Patrick O'Sullivan was a lawyer and judge.

What nationality was Clifford Patrick O'Sullivan?

Clifford Patrick O'Sullivan was American.

Sources & further reading

· Wikipedia: Clifford Patrick O'Sullivan

· Wikidata: Q5133021

· DBpedia: Clifford Patrick O'Sullivan

Cite this page

APA: Biography.guide. (2026). Clifford Patrick O'Sullivan. https://biography.guide/clifford-patrick-o-sullivan/

MLA: "Clifford Patrick O'Sullivan." Biography.guide, https://biography.guide/clifford-patrick-o-sullivan/.

Chicago: "Clifford Patrick O'Sullivan." Biography.guide. https://biography.guide/clifford-patrick-o-sullivan/.

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

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