I read your post and it may be a possibility that Dr. Clarence "William Toby" Lieb may actually be a brother to my great grandfather, James Toby. James was born in June 1883 in Wisconsin. His marraige license states that his mothers name was Mary and fathers name was John. The 1900 census shows William Toby as a 14 year old living with a John and Mary Pilner in Waupaca Wisconsin.
I have literally nothing to go on, as our family told us James ran away from a boarding situation at the age of 12. Wether he was a boarder with these folks that William stayed with or a boarder at a school , we dont know. James said his mother died when he was very young and there were 6 children total. James youngest daughter traveled with him to Sheboygan Wisconsin in 1948 where he thought his mother to be buried. He wanted to locate the grave but had no success