I don't have your John Graham born in 1769 but I do have a Graham lineage back to Andrew Graham born 1658 in Glasco Scotland. died 1698 in Ireland. I know I don't have all the children down in each generation. Most generations had a John Graham. My first John Graham was the Rev. John Graham born 1694 Scotland. Died 1744 Conn. There are 15 John Grahams in My lineage.