Mo may have been Betty or Beth Jamerson, found on census at age 19 working as a cook for a family named Burgess in Ridgeway, Va. She may have died before 1880 of scrofula(TB). John may have had a brother /cousin/uncle/friend named Walter. Granddaddy would still visit this person in the 1950's. John also had a connection with the Presbyterians and was educated by/through them and their connections. Any help is good.