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.
George O'Brien (painter)
George O'Brien was born at Dromoland Castle County Clare, Ireland in 1821 he was the fifth son of Admiral Robert O'Brien, a direct descendant of Murrough O'Brien, 57th King of Thomond Baron Inchiquin, and of Brian Boroimhe, Monarch of Ireland (?-1014). George O'Brien was a first cousin of William Smith O'Brien (1803–1864) deported to Tasmania for his part in the 1848 'Young Ireland' uprising, and a cousin too of James FitzGerald, at one time Superintendent of the Canterbury Province in New Zealand.