Jon Brennan [Edit] By Sticky Facts Editorial StaffJon Brennan biography, ethnicity, religion, interesting facts, favorites, family, updates, childhood facts, information and more:Jon Brennan date of birth:July 30, 1974How old is Jon Brennan?52 Tags: birth day 30birth month julybirth year 1974 Suggested Posts Adam Driver Facts Harry Styles Facts Florence Henderson Facts George Clooney Facts David Bowie Facts Katy Perry Facts Margot Robbie Facts Kanye West Facts