Or, Subtitled: A Cross-Slit and Underkeel in Each Ear — The Value of Earmarks in Genealogy According to Margaret Austin of Bay Village, Ohio, who researched the Hammons family exhaustively for years and shared her research notes with me in April 1997, Thomas Whitlock’s son-in-law John Hammons appears to have been born about 1770-2. Margaret … More Children of Thomas Whitlock (abt. 1745 – 1830) and Wife Hannah Phillips: Daughter Who Married John Hammons (1)