The 1911 census entry I could only find by looking up Eliza Jay (Monmouthshire). The entry seems to be in Leopold's handwriting and is signed by him. The name given is Leopold Jay (no Edward, no Johnson), the same as appears in the Red Cross internment records. The 1911 census gives his birth as Germany, and he is 37 (which would mean he was born about 1874), and the marriage is 5 years old.. The Red Cross data gives his birth as Insterburg, East Prussia 1871. On my father's birth certificate he is simply named Leopold Johnson (no Jay!) so it's all rather mysterious. Given that the three documentary records call him Leopold, the chances of him being Edward Leonard Jay who died in Liverpool 1940 I guess are slim. But an unsent postcard of about 1914 addressed to him in the interment camp is addressed E L Jay, so the Edward is quite possible. Hope this makes sense. My main concern is to see what happened to him after his separation from Eliza after the war.