There was a Col. John Alford of Charlestown who was a member of the Ancient and Honorable Artillery Company in 1714. He was a founder of the Alford Prof. of Nat. Theology,&c., at Harvardand gave a large sum to the Society for Propagating the Gospel among the Indians in North America. He married Margaret Savage. Died in Charleston sept. 1761 at age of 76. Had no children. Whether or not this is your John Alford you are looking for I don't know. The Alford spelling is used although this info came out of "The Burke and Alvord Memorial".