Hi Douglas, if you read the family legend about Silas "White Eagle" McWain, you will see that he was found half dead as a 10 year old in New Hamsphire in about 1785 or so. He was taken in by the McWain family. Andrew was the father and his son, Andrew had a wife Polly Lampson. I don't believe that Polly was Silas' birth mother though. Based on the story that was passed down from generation to generation, that wouldn't make sense. I am hoping that Lyman has information and documentation about this event that would confirm it.