Kennon is of Irish origin, derived from the surname Ó Cianáin. It means 'descendant of Cianán,' a personal name that might have meant 'ancient' or 'enduring.' The name has been used as both a given name and a surname throughout history.
The name Kennon has seen a recurring popularity with five births each in the years 1979, 1991, 1994, 2000, 2007, and 2015, resulting in a total of thirty births over these periods.