Timothy Ewen "Tim" Costello AO (born 4 March 1955) is an Australian Baptist minister and the current Chief Advocate of World Vision Australia. Costello is the brother of Peter Costello, the former treasurer of Australia and Federal Member for Higgins.Costello was born in Melbourne, where he grew up in the suburb of Blackburn and was educated at Carey Baptist Grammar School. He is a descendant of Leitrim, Ireland-born publican and disgraced politician Patrick Costello who was expelled from the Parliament of Victoria. Wikipedia