Mathieu, baron de Montmirail

http://fmg.ac/Projects/MedLands/parclerdam.htm#_Toc523557455

Son of Jean I de Montmirail and Helvide de Dampierre

MATHIEU de Montmirail (-14 Jan [or 16 Jun] 1262). “Guillelmus dominus de Dampetra…ligius homo domini comitis Campanie” agreed peace terms with “dominum Theobaldum comitem Campanie” by charter dated 31 Dec 1223, which names “…J. comitem de Carnoto, Matheum fratrem suum…”[963]. Seigneur de Charly 1226. Seigneur de la Ferté-Gaucher 1240. Seigneur de Montmirail 1240. Châtelain de Cambrai 1241. "Mahius sires de Montmirail" swore homage to “Thiebaut conte de Champagne” for “le rachat de la moitié de Ferté-Ancoul, de la vicomté de Miaus, de Traimes et de Belo qui escheu nous sont de nostre...suer madame Felice de Montmirail”, appointing “mon...cousin Ansiau de Trainel, Witace de Conflans et Monsieur Gaucher de Torotte” as guarantors, by charter dated 15 Aug 1243[964]. [The necrology of Sainte-Geneviève records the death "XVI Kal Jul" of "dominus Matheus miles de Montemirabili"[965].]

m ISABELLE de Villebéon "la Chambellane", daughter of ADAM [I] Seigneur de Villebéon, Chambellan de France & his first wife Isabelle de Tancarville (-25 Mar 1265). Dame de la Chapelle-Gautier-en-Brie. A charter dated 1 Mar 1262 (O.S.?) records an agreement between “Ysabeau de Villebeon Dame de la Chapelle en Brie, veuve de feu Monsieur Mathieu Seigneur de Montmirail et d‘Oisy“ and “Monsieur Enguerran Sire de Coucy” regarding her dowry from property at “la Ferté-Ancoul, Raumesnil, Chasteauthierry, Challons et autres“[966]. "Ysabiaus dame de la Chapelle" confirmed an agreement with Barbeau abbey made during the lifetime of “Mahys chevaliers sires de Monmirail et d’Oysi mes sires”, confirmed by “mon...frere et seigneur monseigneur Pierre le Chambellan” by charter dated Jan 1265[967]. The necrology of the Abbaye du Jard records the death "VIII Kal Apr" of "domine Ysabellis domine de Montemirabili"[968].