Grafin Agnès (Agathe) de Montfaucon (de Montbéliard)

http://roglo.eu/roglo?lang=ru;m=N;v=de+montfaucon

   AGATHA (-after Jun 1251). Her parentage and marriage confirmed by a charter dated Jun 1251 under which "Houdris sires d’Arcuncey et d’Arberch" granted property at Saint-Blaise to "dame Sebile dame de Neufchastel, fille Thierri conte de Monbeliart sorour ma femme" among the guarantors[1881].

   m ULRIC de Neuchâtel, Seigneur d’Arberg, son of ULRIC [III] Seigneur de Neuchâtel & his wife --- (-[1276/78]).

   [1881] Trouillat (1852), Tome I, 407, p. 588, quoting Matile Monuments de l’histoire de Neuchâtel, Tome I, p. 112.