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 Leonardo DiCaprio Facts Mike Tyson Facts Eminem Facts Miley Cyrus Facts Marlon Brando Facts Katy Perry Facts Justin Timberlake Facts Mark Wahlberg Facts