Born in Scitico, Enfield, Hartford, Connecticut, in 1871, son of Michael Leary and Mary McCarthy Leary. Married Sadie Leary (born 1881), had three children, Katharine Leary, Eugenia D Leary and John D. Leary. Lived in 1940 at 25 East 77th Street, New York and at White Plains.
Democrat. Delegate to New York state constitutional convention, 20th District, 1915. Of the Sixth District Municipal Court of Manhattan according to the New York Times 20 June 1922 in an article about aiding artists. Justice of New York Supreme Court, 1st District, 1933-40. Died 19 April 1946.