Cannon
Cannon is really a CBS detective television show produced by Quinn Martin which aired from March 26, 1971 on March 3, 1976. The primary protagonist would be your name character detective Frank Cannon. He appeared on two episodes of Barnaby Jones.
Cannon may be your first Quinn Martin-produced string to be aired on a network other. A"revival" television film, The Return of Frank Cannon, premiered on November 1, 1980. There were 124 episodes.