I have the same problem. I've gotten information that takes mt to Mark Tarr a son of Mary and John. I have information on John's mother but nothing on his father. Mary Died Febuary 5,1855 and is barried in Salam, Me. at Mount Abram cemitary next to John but there is no parents listed for her. I hope some of this helps. If you find out anything else I would apreciate the info.