I presume you mean he was born in 1919, not in 1819 as you mention. He would be a bit too old to fight in the second world war if he was born in 1819. It looks as if he was illegitimate, because his mother had the maiden name of Goodswen. He could have been the child of Bessie Amelia, but known as her nephew. The birth certificate will clarify.
Name: GOODSWEN, Cyril J
Registration district: Depwade
Year of registration: 1919
Quarter of registration: Jul-Aug-Sep
Mother's maiden name: Goodswen