James (Jimmy or Jim) Maloney (Moloney)

I am trying to trace a long lost uncle, Jimmy Maloney, who was born in Roscrea in February 1911 and left there in the 1940´s to go to London to join the RAF. No contact has ever been made since then. We did here that some priest met him in Australia in the seventies. He probably is dead by now but perhaps he has a family of his own (wife,sons,daughters) out there somewhere.We would love to find out about him. Please,please!!Can somebody help me??