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 Charlize Theron Facts Justin Bieber Facts Adam Driver Facts Emma Watson Facts Julia Roberts Facts Angelina Jolie Facts Sylvester Stallone Facts Rihanna Facts