GUILLAUME [I] de Fiennes (-[1235/44]). The Historia Comitum Ghisnensium names "Willelmum, Thomam et Eustacium et filias" as the children of "de Fielnis…Engelramnum" and his wife "nobilem de Tingreio Sibillam…"[663]. "Willelmus filius Ingelrami dominus de Fielnes" donated property to Andres, with the consent of "uxore mea Agnete et filio meo Ingelramno", by charter dated 1 Jan 1203 witnessed by "Radulfo de Fielnes patruo meo…Joanne de Tingri…"[664]. The Testa de Nevill includes a writ of King John dated 1212 which records that "Willelmus de Fienes" held "manerium de Mortok que fuit de dominico regis de dono comitis Willelmi filii Reginaldi filii Stephani qui manerium predictum dedit [Faramo] de Bolonia pro servicio i militis" in Somerset[665]. m AGNES de Dammartin, daughter of AUBRY [II] Comte de Dammartin & his wife Mathilde [Mabile] de Clermont-en-Beauvaisis. "Willelmus filius Ingelrami dominus de Fielnes" donated property to Andres, with the consent of "uxore mea Agnete et filio meo Ingelramno", by charter dated 1 Jan 1203 witnessed by "Radulfo de Fielnes patruo meo…Joanne de Tingri…"[666]. Guillaume & his wife had six children