My grandmother's twin brother John george Wadlow emigrated from the UK to the US. He married Gertrude Spreckels the daughter of a German couple. She was born in the US about 1907. John and Gertrude had a son born in Brooklyn New York about 1937. The 1940 census lists him as Jose, but it should be Jack. I am now officially stuck how to search further. I would like to find birth and death records of each family member and marriage records for John & Gertrude. I wish to discover what happened to Jack to see if I have living relatives in America. Can anyone point me in the right direction. Many thanks in advance.