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.
William L. O'Brien
William L. "Bill" O'Brien (born July 20, 1951) is a lawyer and Republican legislator from Mont Vernon, New Hampshire who has been a member of the New Hampshire House of Representatives since 2004, representing district Hillsborough-4. O'Brien was elected the Speaker of the House on December 1, 2010, when Republicans took control of the House. When Democrats regained control of the House in the 2012 election, O'Brien did not run for a leadership position.