The cartulary of Merton Priory records that Hugh Maminot gave the manor of Petham (Kent) to Ralph de Chesney in marriage with his daughter Alice [L.F. Salzman, Sussex Arch. Coll., vol. 65, pp. 21, 22 (1924), citing British Library Cotton MS Cleopatra C VI, no 69]. Chronologically, this would beJohn's father rather than his grandfather. (As Salzman points out, according to a Lewes manuscript, Ralph was predeceased by a wife named Emma -Dugdale, Monasticon Anglicanum, vol. 5, p. 14 (1817-30 edn) - so it is possible that the Merton cartulary is wrong in calling Hugh Maminot'sdaughter Alice - Keats-Rohan (Domesday Descendants, p. 369) apparently takes this view.)

Evidently Alice de Chesney survived at least until 1185, as she and Geoffrey made a gift to Brockley (later Bayham Abbey) with the assent ofGilbert, bishop of Rochester, who did not succeed until that year [J. Thorpe, op. cit., p. 378, citing British Library Cotton MS Otho A II, ff. 36,37].