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?50 Tags: birth day 30birth month julybirth year 1974 Suggested Posts Michael Schumacher Facts Shakira Facts Amy Winehouse Facts Lena Headey Facts Harry Styles Facts Jennifer Lawrence Facts Kim Kardashian West Facts George Clooney Facts