Memorial inside Darlington War Memorial Hospital to PILOT OFFICER WILLIAM STUART McMULLEN Royal Canadian Air Force 428 Sqdn. The war hero pilot William Stuart McMullen who saved Darlington lives Monday marks 75 years since Second World War hero sacrificed his own life to save lives in Darlington PILOT OFFICERWILLIAM STUART McMULLEN Service Number: J/90038 Regiment & Unit/Ship Royal Canadian Air Force 428 Sqdn. Date of Death Died 13 January 1945 Age 33 years old Buried or commemorated at HARROGATE (STONEFALL) CEMETERY Sec. H. Row E. Grave 5. United Kingdom From Finda Grave. Pilot Officer (Pilot) William Stuart McMullen... And details of loss from Ancestry.