Born June 17, 1924, in Chillicothe, to Donald M. and Mary Ellen McEvoy Allen, he married Helen M. Kolar Aug. 16, 1947 in Fox River Grove.
A 1942 graduate of Chillicothe High School, he received his preparatory education at Northwestern University (B.S. 1947). He received his legal education at Columbia University and the University of Wisconsin (J.D. 1950). In 1943, he enlisted in the U.S. Army. As member of the 87th Infantry Division in the European Theater of World War II, he earned a Purple Heart and a Bronze Star.
He was admitted to the Illinois and Wisconsin bars in 1950. In 1951, he joined the Peoria law firm of Heyl, Royster, & Voelker. He was admitted to the 7th Circuit Court of Appeals in 1954, and to the United States Supreme Court in 1960. In 1962 the firm’s name was changed to Heyl, Royster, Voelker, & Allen.
Mr. Allen was a member of the ISBA Committee on Forms from 1962-64; a member of the Council of the Civil Practice and Procedure Section from 1955-61, of which he was secretary from 1956-61 and editor of Trial Briefs, the Section’s Newsletter, from 1961-63; secretary of the Council of the Insurance Law Section from 1963-64. He became a member of the ISBA Board of Governors in 1964.