My brother in law is a Thoby. His mother is a Post. He is a full blooded Sioux Indian. He now lives in Calgary Alberta. He was raised in Waltham New York. His grandfather who was also a Sioux Indian (don't know his name) died about 15 to 20 years ago, in the western U.S.A. We are still trying to find some of his family. Can you help? Are all the Toby,Thoby,Tobey's related?