JEAN de Beaumont (-15 Jun 1222). “Matheus comes Bellimontis” donated property to the monks of Saint-Léonor, with the consent of “Mathei filii sui primogeniti, ceterorumque filiorum eius, Philippi, Mathei atque Johannis” and the support of “Aelide comitissa”, by charter dated 1160[159]. "Matheus comes Bellimontis et dominus Valesie" donated property to the abbey of Saint-Martin de Pontoise with the consent of "Elienoris comitisse uxoris sue filie Radulphi comitis Perone" for the souls of "Aelidis sororis mee et…fratrum suorum Philepi, Mathei, Johannis" by charter dated 1176[160]. "Adeleidis comitissa quondam de Bellomonte nunc autem de Gornaio domina" donated property to the church of St Marie de Gournay by charter dated [1186/87], witnessed by "Matheus et Johannes filii predicte comitisse"[161]. Seigneur de Lusarches 1198. He succeeded his half-brother as Comte de Beaumont in 1209. "Johannes comes Bellimontis" donated property "vineam meam de Prato, apud Joiacum…" to Val-Notre-Dame by charter dated 1221[162]. “Les héritiers de Jean de Beaumont: 1. Gui, Hugues, Raoul et Adam d’Andelli; 2. Jean et Thibaud de la Boissière; 3. Thibaud d’Ulli” relinquished their rights in his succession in favour of the king by charter dated [15 Mar/22 Apr] 1223[163]. m firstly (annulled) GERTRUDE de Soissons, daughter of RAOUL [I] Comte de Soissons & his first wife Alix de dreux [Capet] (-[26 Sep 1220/Sep 1222]). The Chronicle of Alberic de Trois-Fontaines names "uxorem comitis Iohannis Bellimontis…et uxorem Stephani de Sancerra" as the two daughters of "Alaydis [filia comitem de Brana Robertum domnum]" & her fourth husband, specifying that "Matheus de Montinorenci" had children by the former[164]. She married secondly (1193) as his first wife, Mathieu [II] "le Grand" Seigneur de Montmorency. The necrology of the abbey of Notre-Dame du Val records the death "VI Kal Oct" of "Geltrudis domina de Montemorenciaco"[165]. m secondly (before 1214) JEANNE de Garlande, daughter of GUILLAUME [IV] Sire de Garlande & his wife Adela de Châtillon-sur-Marne (-29 Nov 1220). "Johannis comitis Bellimontis" placed the monks of Acy in possession of property at the request of his wife Jeanne by charter dated Apr 1217[166]. Her parentage is confirmed by the charter dated 1217 under which “Johannes comes Bellimontis” agreed the succession of “domino Guillelmo de Gallandia” with “Henricus comes Grandiprati…et Guidonem buticularium”, which states that he had married the deceased’s oldest daughter and the other two his second and third daughters respectively[167]. "Johannis comes Bellimontis" confirmed a donation by "Johanna comitissa uxor mea" to Notre-Dame de Gournay by charter dated [1 Jan/29 Mar to 29 Nov 1220], on the reverse of which is added "III Kal Dec ob Johanna comitissa Bellimontis"[168]. The Necrologium Bellimontense records the death “III Kal Dec” of “Johanna comitissa Bellimontis”[169].