William de Chesney

William de Chesney (Sometimes William of Norwich or William fitzRobert Sybil was the daughter of Ralph de Chesney.) Robert fitz Walter was lord of Horsford in Norfolk,

Roger was the eldest brother of William, but died childless during their father's lifetime. The next son, John, inherited the family lands, but died around 1149 Two further children of Robert's, Elias and Peter, are known, but whether they were the children of the first marriage or the second is unclear. possibly in compensation for the loss of the manor of Mileham. Chesney likely lost Mileham to another noble family, the fitzAlans, as part of the settlement resulting from the Treaty of Wallingford which settled the civil war in England. Both William's father Robert and his elder brother John had held these offices before him.

Chesney was Sheriff of Norfolk in the late 1140s and the 1150s, being recorded as holding that office in two documents – one dated to between 1146 and 1149 and the other dated to between 1146 and 1153. The same documents record him as holding the office of Sheriff of Suffolk at concurrent times. He held both offices again between 1156 and 1163. Margaret married twice – first to Hugh de Cressy and second to Robert fitzRoger. Clemence married Jordan de Sackville, and Sara married Richard Engaine.

At his death, Chesney had outstanding debts, both to the king and to Jewish moneylenders. In 1214, his daughter Margaret was exempted from repaying any of her father's debts to those moneylenders by a royal grant.