'William's oldest son John married Margery Caslin/Kestin, had seven children, inherited the Gumley property and dated his will there 5 October 1664, which was proved at Leicester on 3 August 1667.'
Records of Gumley: 'John Horton of Gumley [Eldest son of William and Isabell Horton) and Margery née Caslin (or Kestin?) his wife:-- Their marriage ... Apr. 1630 ... Her burial at Gumley ... 5/3/1686/7'