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 Zinédine Zidane Facts Emma Watson Facts Kit Harington Facts David Beckham Facts Beyoncé Knowles Facts Tom Cruise Facts Katy Perry Facts Justin Bieber Facts