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 Amy Winehouse Facts Aaliyah Facts Bruno Mars Facts Kit Harington Facts Marlon Brando Facts Florence Henderson Facts Justin Timberlake Facts Shakira Facts