William Edward Griswold was the only son of Edward and Mary Griswold. He was born about 1919. He was educated at Magherafelt Technical School. Teddie Griswold enlisted in the Royal Air Force about November 1939. On the morning of 8th January 1941, the Wellington Mark I bomber (Serial no T2956) took off from Stradishall (west of Ipswich) on a test flight. The aircraft is believed to have iced up while flying in cloud and crashed near Haverhill, Suffolk. All the crew perished in the crash.