John T. Cahill lawyer and prosecutor (1903-66). Cahill served as U.S. Attorney for the Southern District of New York (1939-41) and was the lead prosecutor in the trial of former United States Circuit Judge Martin T. Manton, which led to Manton's conviction. Cahill was the son of a New York City Police Officer who had immigrated from Ireland. He attended Townsend Harris High School

Townsend Harris High School

Townsend Harris High School is a public magnet high school for the humanities in the borough of Queens in New York City. Students and alumni often refer to themselves as "Harrisites." Townsend Harris consistently ranks as among the top 100 High Schools in the United States. It currently operates as...

, a public school in New York and later attended Columbia University, A.B. (1924) and Harvard Law School, LL.B. (1927). He joined the law firm of Cotton & Franklin, the predecessor to the firm that was to later bear his name, Cahill Gordon & Reindel

Cahill Gordon & Reindel

Cahill Gordon & Reindel LLP is a prominent New York-based international law firm with offices in New York, Washington, D.C. and London...

. John T. Cahill represented NBC, RCA, W.R. Grace & Co. and A&P, among other corporate giants.