Alan Lancelot Treanor was the son of Sydney and Ena Treanor. He was born about 1921. Alan Treanor attended Down High School. Pilot Officer Alan Treanor served with the Royal Air Force in World War Two. Pilot Officer Treanor flew a Hurricane fighter with 245 Squadron. On 1st June 1940, his Hurricane (Serial No N2658) was flying a combat air patrol over Dunkirk, France. It failed to return and Pilot Officer Alan Lancelot Treanor was missing, presumed dead.