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 Jennifer Lawrence Facts Rihanna Facts Chester Bennington Facts Adam Sandler Facts Amy Winehouse Facts Justin Timberlake Facts Lady Gaga Facts Aaliyah Facts