 Chesney died in 1174, having had three daughters with his wife Gilla. Her ancestry is unknown, and it is possible that William married another time, to Aubrey de Poynings, because a Lewes Priory charter dated to around 1165 names a William de Chesney and Aubrey his wife, but it is not clear whether this charter is referring to William de Chesney the sheriff or to another William. William and Gilla's daughters were Margaret, Clemence, and Sara, all of whom were unmarried at the time of their father's death. Margaret married twice – first to Hugh de Cressy and second to Robert fitzRoger. Clemence married Jordan de Sackville, and Sara married Richard Engaine. Margaret inherited the majority of her father's estates.
