Born: 14-Oct-1874
Birthplace: Buffalo, NY
Died: 1974
Cause of death: unspecified
Remains: Buried, Washington National Cathedral, Washington, DC

Gender: Male
Race or Ethnicity: White
Occupation: Government, Attorney, Politician

Nationality: United States
Executive summary: Prominent antitrust lawyer

Successfully defended the Tennessee Valley Authority Act when he argued Tennessee Electric Power Co. v. Tennessee Valley Authority before the Supreme Court in 1938.

As special assistant to the Attorney General for war work, it was O'Brian who assigned J. Edgar Hoover to the Enemy Aliens Registration Section.

    Law School: LLB, Buffalo Law School (1898)

    US Attorney Western District of New York (1909-14)
    New York State Assembly (1908-09)
    Alfalfa Club 1917
    Fund for the Republic
    Washington National Monument Society Vice President
    Delta Upsilon Fraternity
    Phi Delta Phi Legal Fraternity
    Alfalfa Party candidate for US President

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