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?51 Tags: birth day 30birth month julybirth year 1974 Suggested Posts Bruno Mars Facts Madonna Facts Angelina Jolie Facts Arnold Schwarzenegger Facts Tom Cruise Facts Robin Williams Facts George Clooney Facts Dwayne Johnson Facts