GUILLAUME [III] de Tancarville, son of GUILLAUME [II] de Tancarville & his wife Alix de Séran (-after 1214). "Willelmus camerarius de Tancharvilla, filius Rabelli" confirmed the purchase of land at Bretteville from the church of Bayeux, with the consent of "Willelmum filium meum", by charter dated to [1182/1205][1906]. "Guillaume Chambellan de Tancarville" donated land "à Iz" to the priory of Sainte-Barbe, at the request of "Alix sa femme", by undated charter witnessed by "Guillaume de Séran, frère de la dite Alix"[1907].
m ALIX de Serans, daughter of ---. "Guillaume Chambellan de Tancarville" donated land "à Iz" to the priory of Sainte-Barbe, at the request of "Alix sa femme", by undated charter witnessed by "Guillaume de Séran, frère de la dite Alix"[1908]. Philippe II King of France confirmed the marriage contract between “Guillelmus cambellanus de Tancarvilla...Isabella filia sua” and “Adæ filio...Galterii junioris camerarii nostri” by charter dated 1205, which provided for an increase in the dowry if Guillaume de Tancarville had no male heir “ex Alliz uxore sua” and if “Marsilia sororia ipsius” died[1909].
Guillaume [III] & his wife had two children