MARGUERITE ([1170]-12 Jul 1230). "…Filiis quoque et filiabus meis Theobaldo et Ludovico atque Henrico, Margarita et Ysabella" consented to the donation by "Theobaldus Blesensis comes, Francie senesscalus" to Hôtel-Dieu, Châteaudun by charter dated 1183[311]. "Hugo vicecomes Meldensis" donated property to Cavea monastery, with the consent of "domina Margarete uxore mea", by charter dated to [1185][312]. Her first marriage is confirmed by the charter dated [Jun/Aug] 1208 under which "Margareta uxor Galterii de Averna comitissa palatina Burgundie" confirmed an agreement between "Willelmum militem de Monasteriis" and Saint-Martin-des-Champs which also names "Hugo de Oysi filius Symonis vicecomitis, olim maritus meus"[313]. "Hugo de Oisiaco vicecomes Meldensis, castellanus Cameracensis" donated property to "ecclesiam B. Mariæ de Pratis", for the soul of "uxoris meæ Margaretæ", by charter dated 1189[314]. "Filiabus mei Margarita, Ysabella" consented to the donation by "Theobaldus comes Blesensis, Francie senesscalus" to Hôtel-Dieu, Châteaudun by charter dated 1190[315]. "…Philippo fratre et sororibus Marguerita, Isabella et Adelicia" consented to the donation by "Louis C. de Blois et de Clermont" to the abbey of l'Etoile by charter dated 1190[316]. William of Tyre (Continuator) records "la fille dou conte Thibaut de Blois" being the wife of "Otes dus de Borgoigne"[317]. "…Sororibus meis Margarita, Ysabella, Adelicis" consented to the donation by "Ludovicus comes Blesensis et Clarimontis" to Hôtel-Dieu, Châteaudun by charter dated 27 Jan 1196[318]. "…Sororibusque meis Margarita et Ysabella et Adelicia" consented to the confirmation by "Ludovicus Blesensis et Clarimontis comes" of the donation by "Gaufridus vicecomes Castriduni" to Hôtel-Dieu, Châteaudun by charter dated Mar 1200[319]. The late 13th century genealogy by Balduinus de Avennis records that "dominus Galterus filius [Jacobi] primogeniti" married "Margareta comitatus Blesensis hærede"[320]. "…Sororibus meis Margarita, Ysabella" consented to the donation by "Ludovicus Blesensis et Clarimontis comes…Iherosolimam proficiscens" to Hôtel-Dieu, Châteadun by charter dated May 1202[321]. "Margareta uxor Galterii de Averna comitissa palatina Burgundie" confirmed an agreement between "Willelmum militem de Monasteriis" and Saint-Martin-des-Champs by charter dated [Jun/Aug] 1208 which also names "Hugo de Oysi filius Symonis vicecomitis, olim maritus meus"[322]. She succeeded her nephew in 1218 as Ctss de Blois et de Châteaudun. The necrology of the abbey of Vauduisant records the death "IV Id Jul" of "comitisse Blesensis Marguerite"[323]. The necrology of La Cour-Dieu records the death "IV Id Jul" of "comitissa Blesensis"[324]. m firstly ([1183]) as his second wife, HUGUES [III] d'Oisy châtelain de Cambrai, son of SIMON d'Oisy, châtelain de Cambrai & his wife Ade de la Ferté-Ancoul-sous-Jouarre (-29 Aug 1189). m secondly ([1190]) OTTO von Staufen Comte Palatin de Bourgogne, son of Emperor FRIEDRICH I "Barbarossa" & his second wife Beatrix Ctss Palatine de Bourgogne ([Jun/Jul] 1170-Besançon 13 Jan 1200, bur Besançon Saint-Etienne). m thirdly (after 1200) GAUTHIER [II] d'Avesnes Seigneur d'Avesnes, son of JACQUES Seigneur d'Avesnes & his wife Adeline de Guise (-[1243/46]). Comte de Blois et de Guise.