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William O'Dwyer

1890 – 1964

Irish-American politician and diplomat; 100th Mayor of New York City (1946-1950); attained rank of Brigadier General in WW II

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About William O'Dwyer

Lived 1890 – 1964 (aged 74). William O'Dwyer was an American lawyer, diplomat, politician, ambassador, jurist and mayor.

William O'Dwyer (July 11, 1890 – November 24, 1964) was an Irish-American attorney and Democratic Party politician who served as the 101st Mayor of New York City from 1946 to 1950, when he resigned under the cloud of multiple investigations into corruption in the New York City Police Department. He also served as Brooklyn District Attorney from 1940 to 1945 and United States Ambassador to Mexico from 1950 to 1952.

Early life

O'Dwyer was born in Bohola, County Mayo, Ireland and studied at St. Nathys College, Ballaghaderreen, County Roscommon. In 1907, O'Dwyer began to study for the priesthood at the Pontifical University of Salamanca, a Jesuit seminary in Spain, where he became fluent in Spanish. He later decided not to join the clergy, and emigrated to the United States in 1910. and his prosecution of the organized crime syndicate known as Murder, Inc. made him a national celebrity.

After losing the mayoral election to Fiorello La Guardia in 1941, O'Dwyer joined the United States Army for World War II, achieving the rank of brigadier general as a member of the Allied Commission for Italy and executive director of the War Refugee Board, for which he received the Legion of Merit. During that time, he was on leave from his elected position as district attorney and replaced by his chief assistant, Thomas Cradock Hughes, and was re-elected in November 1943.

Mayor of New York City

In 1945, O'Dwyer received the support of Tammany Hall leader Edward V. Loughlin, won the Democratic nomination, and then easily won the mayoral election. At his inauguration, O'Dwyer celebrated to the song, "It's a Great Day for the Irish", and addressed the 700 people gathered in Council Chambers at City Hall: "It is our high purpose to devote our whole time, our whole energy to do good work...." He established the Office of City Construction Coordinator, appointing Park Commissioner Robert Moses to the post, worked to have the permanent home of the United Nations located in Manhattan, presided over the first billion-dollar New York City budget, created a traffic department and raised the subway fare from five cents to ten cents. In 1948, O'Dwyer received The Hundred Year Association of New York's Gold Medal Award "in recognition of outstanding contributions to the City of New York." In 1948, he received the epithets "Whirling Willie" and "Flip-Flop Willie" from U.S. Representative Vito Marcantonio of the opposition American Labor Party while the latter was campaigning for Henry A. Wallace.

Shortly after his re-election to the mayoralty in 1949, O'Dwyer was confronted with a police corruption scandal uncovered by the Kings County District Attorney, Miles McDonald. O'Dwyer resigned from office on August 31, 1950. Upon his resignation, he was given a ticker tape parade up Broadway's Canyon of Heroes in the borough of Manhattan. President Harry Truman appointed him U.S. Ambassador to Mexico. He returned to New York City in 1951 to answer questions concerning his association with organized crime figures and the accusations followed him for the rest of his life. He resigned as ambassador on December 6, 1952, but remained in Mexico until 1960.

He helped organize the first Israel Day Parade, along with New York's Jewish community.

Death O'Dwyer died in New York City on November 24, 1964, in Beth Israel Hospital, aged 74, from heart failure. His funeral mass was held at St. Patrick's Cathedral on November 27, and he was interred at Arlington National Cemetery, Section 2, Grave 889-A-RH.

Family In 1916, O'Dwyer married Catherine Lenihan, whom he met while he was working as a bartender at the Vanderbilt Hotel and she was employed as one of the Vanderbilt's telephone switchboard operators. Her funeral was originally planned for St. Joseph's Church in the Yorkville neighborhood of Manhattan, where she and her husband were members. The large number of attendees resulted in a move to St. Patrick's Cathedral, where the service was presided over by Cardinal Francis Spellman. They divorced in 1953, but remained close, and Simpson attended O'Dwyer's funeral in 1964.

His brother Paul O'Dwyer served as President of the City Council from 1973 to 1977, and his nephew Brian O'Dwyer was appointed chair of the New York State Gaming Commission in 2022.

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Important facts

Birth century
Nationality
Education
Fordham University School of Law, Fordham University Law School
Positions held
Mayor of New York City, United States Ambassador to Mexico
Awards
Legion of Merit

People in William O'Dwyer's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped William O'Dwyer's

Frequently asked questions

Who was William O'Dwyer?

Irish-American politician and diplomat; 100th Mayor of New York City (1946-1950); attained rank of Brigadier General in WW II

When was William O'Dwyer born?

William O'Dwyer was born on 11 July 1890 in County Mayo.

When did William O'Dwyer die?

William O'Dwyer died on 24 November 1964 in New York City.

What was William O'Dwyer's occupation?

William O'Dwyer was a lawyer, diplomat, politician, ambassador, jurist and mayor.

What nationality was William O'Dwyer?

William O'Dwyer was American.

Sources & further reading

· Wikipedia: William O'Dwyer

· Wikidata: Q441554

· DBpedia: William O'Dwyer

Cite this page

APA: Biography.guide. (2026). William O'Dwyer. https://biography.guide/william-o-dwyer/

MLA: "William O'Dwyer." Biography.guide, https://biography.guide/william-o-dwyer/.

Chicago: "William O'Dwyer." Biography.guide. https://biography.guide/william-o-dwyer/.

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