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.
Willis H. O'Brien
Willis O'Brien was born in Oakland, California. He first left home at the age of eleven to work on cattle ranches, and again at the age of thirteen when he took on a variety of jobs including farmhand, factory worker, fur trapper, cowboy, and bartender. During this time he also competed in rodeos and developed an interest in dinosaurs while working as a guide to palaeontologists in Crater Lake region.