In 1860 Cedar Co. MO census, Mary (Nall) Younger was living in the home of her son, Thomas who married Sarah (Church) Younger, so there is no way that this Mary and Sarah were married to the same man. In 1850 census, Mary (Nall) Younger was still in Williamson Co. TN and I think that is where we need to look for a burial place for her husband, Thomas. Wilma