John Barton O'Hara (January 13, 1944 â February 22, 1992) was an American football coach. He served as the head football coach at Southwest Texas State UniversityâÂÂnow known as Texas State UniversityâÂÂfrom 1983 to 1989, compiling a record of 36âÂÂ41. O'Hara died in 1992 on a Caribbean cruise while he was a member of the University of Iowa coaching staff.