ROBERT de Beaumont (-[16 Aug or 20 Sep] 1208 or after, bur Préaux). "Gualeran comes Mellensis" confirmed his foundation of a chapel "at Watteville before the gates of his castle" by charter dated [1154/55], witnessed by his sons Robert and Gualeran and his wife Agnes[2720]. Robert of Torigny records that "filius eius Robertus" succeeded "Gualerannus comes Mellenti" when he became a monk in 1166[2721]. He succeeded his father in 1166 as Comte de Meulan. "R comes de Mellento" confirmed the donation of "nobilis vir Galerannus comes pater meus" to Notre-Dame de la Trappe by undated charter[2722]. "Robertus comes Mellenti" confirmed donations to Gournay Sainte-Marie made by "pater meus Galerannus comes et mater mea Agnes", in the presence of "Willelmus de Garlanda, Robertus Malusvicinus et Drogo de Mello fratres, Willelmus Malusvicinus, Manasses frater eius…", by undated charter dated to after 1166[2723]. "Robertus comes Mellenti" donated property to Notre-Dame du Bon-Port by charter dated to [1190], signed by "Petrus filius meus"[2724]. "Robertus comes Mellenti" donated property to Notre-Dame du Bon-Port by charter dated 1192, signed by "Henricus filius meus…"[2725]. He experienced major difficulties in balancing the interests of Normandy, France and England, as landholder in all three jurisdictions. Eventually Philippe II King of France seized all his estates in France and John King of England all those in England[2726]. Thomas Stapleton, in his "Observations on the Great Rolls of the Exchequer of Normandy", records that Robert Comte de Meulan devised his lands in Normandy and England "ex toto to Mabiria wife of William Earl of the Isle and to have them confirmed to [her], as to his next heir [tanquam heredi meo propinquiori]", by charter dated 1 May 1204 "copied into the cartulary of Beaulieu in the forest of Préaux near Rouen", witnessed by "John de Préaux, William de Préaux…"[2727]. Thomas Stapleton states that Comte Robert, after he divested himself of all his lands, "was alive at the close of the year 1207" (without citing the corresponding primary source) and that his "obit…was kept on the 20th Sept by the monks of Préaux and on the 16th Aug by those of St Nicaise de Meulan"[2728]. m ([1165]) MATILDA of Cornwall, daughter of RAINALD de Dunstanville Earl of Cornwall & his wife Beatrice FitzWilliam. Robert of Torigny records the marriage of "filius eius [Gualeranni comitis Mellenti] Robertus" and "filiam Rainaldi comitis Cornubiensis" but does not name her[2729]. The primary source which confirms her name has not yet been identified. Comte Robert & his wife had [six] children