My grandmother was Nellie M Chubbuck. Her father was Joseph Chubbuck. We knew the story that her biological grandparents left Michigan or Illinois and came across the prairie in a covered wagon. It was bad weather and they had a baby. They knew the baby would not survive in the weather so they gave the baby (Joseph) to Dr C Chubbuck. I just recently found out that my biological great-great grandfather's last name was Gainer. Not 100% sure of the first name, but they thought it was Henry. I have found a Mary Gainer buried in Tecumseh Cemetary (Nebraska). No birth or death date but does state 'mother of Joseph Chubbuck'. Also states that there was a infant Gainer, so am thinking maybe she died in childbirth. I don't know if you have any of these names in your family but I have to start somewhere. Thanks for any info that you might have.