Family secret please help!
I need help/advice. My great great grandma (Mary) was adopted but we found out through ancestry that my great grandpa (Larry, Mary’s son) has some connections to Mary’s father Orville. My theory is that Orville is Mary’s biological uncle. Orville had a sister named Helen and she went to Liverpool England through 1913 and 1915. Mary was born in 1915 and Helen never married. I have used all the hints and I’ve searched all of the ancestry records available. So my question is… Is there anyway I could find something else out? I am desperate to find out who Mary’s parents were, so if anyone can help please do!
Edit- I put the family tree in the comments