After David’s death, his two sons had legal disputes in which their surnames were mentioned. One was documented as, "Court of Requests: Pleadings. HENRY VII - HENRY VIII. David Syssell of Witham {on the Hill}, Lincolnshire, v Richard Syssell, yeoman of the robes, and Thomas Chambers, Abbot of Peterborough Abbey: lands and tenements in Stamford, Lincolnshire, and the manor of Tinwell, Rutland. ..." [Court of Requests, 22 April 1541 - 21 April 1542, REQ 2/12/230]