William O'Brien (American football)
William Edward O'Brien (March 11, 1923 – December 1, 2000) was an American football coach and official. He was the seventh head football coach at the Southern Illinois University Carbondale, serving for three seasons, from 1952 to 1954, and compiling a record of 6–20. O'Brien was an official in the National Football League (NFL) for 18 seasons, from 1967 through 1983, officiating in Super Bowl X in 1976. He wore number 83 for the major part of his NFL career. He was also a professor at Southern Illinois University.
Willie O'Brien
William O'Brien (born 26 January 1929) is an English former footballer who played in the Football League for Darlington. A centre half born in Middlesbrough, O'Brien began his football career as a junior with his hometown club, Middlesbrough F.C., and was on the books of Leicester City for the 1947–48 season before serving in the Army. He joined Darlington in February 1950, but did not make his first-team debut for more than a year, when he replaced the injured Geoff Stone on 17 March 1951 for a 4–1 defeat at home to Bradford City. He kept his place for the next Third Division North matchan even heavier defeat, this time away to Hartlepools Unitedbut that was his final appearance.