As a senior at Bellaire High School in 1926, Bonar was the football team captain and quarterback. His team posted an undefeated record of 9-0-1 and was the champion of the Ohio Valley Athletic Conference. After graduation, he enrolled at West Virginia University but later would transfer to Notre Dame.
As the quarterback for Notre Dame under head coach Hunk Anderson, he was unable to replicate his success from high school. His lone campaign as a starter in 1933 resulted in a record of 3-5-1 including six games where the Irish offense was shut out. His career highlight occurred when his drop-kick extra point enabled Notre Dame to defeat 9-0 Army by the score of 13-12 on December 2, 1933 in Yankee Stadium.
After graduation, Bonar played one year of professional football in the CFL before becoming an assistant coach at the University of Cincinnati. He would return to coach the team at his old high school from 1949 to 1958, and would win the OVAC championship twice, in 1950 and 1954.
- Steele, Michael R. The Fighting Irish Football Encyclopedia. Champaign, IL: Sports Publishing LLC (1996). p. 72-74
- BellaireBigReds.com, "BellaireBigReds Records".
- "Rites for Former Notre Dame Player". Raleigh Register. Beckley, WV. November 24, 1970.