Thomas Smith's position as the father of Mary Smith is disputed. The source I have claims that the daughters of The American Revolution list Mary "Polly" Smith as the wife of Peter Dingess, and Thomas Smith as her father, and Phoebe Dunbar as her mother. Others say Thomas Smith and Barbara Anderson. Still others say Barbara and William Anderson, son of Elizabeth and George Anderson. (Augusta Parish Vestry Book 1746 to 1780 pgs. 327-328. Apprentices of Virginia 1623-1800 by H.G. Gill, Jr.)