THIBAUT de Brienne (-1204 or after). "Manasses comes Barri super Sequanam…Theobaldo fratre meo" made donations to the abbey of Mores by charters dated 1164 and [1165], the latter naming "patris mei comitis Milonis"[171]. He is named as brother of Manasses, in a document which also names his wife[172]. "Theobaldus de Barro" noted the donation to Basse-Fontaine of "domum de Coveignon…et vineam Ruffe" made by "Agnes…quondam domina Chacenaii, mater uxoris mee Margarete et Hu--- de Durnaio", with the consent of "uxor mea", by undated charter which must presumably be dated to after [1191][173]. m MARGUERITE, daughter of [JACQUES Seigneur de Chacenay & his wife Agnes de Brienne]. Her parentage and marriage are indicated by the testament of her mother "Agnes…domina Cacenaii", dated to [1191] and made "coram…filiarum mearum M[argareta] domina Chanlotis et H. domina de Durnai", under which the testator bequeathed land "apud Lusigniacum et apud Montem Susanum", previously held by "Jacobus filius domini Erardi Cacensi", to "filie mee M[argarete] domine Chanlotis", and property "apud Taneileres" to "filie domini H[ugonis] Vendopere" by charter dated to [1191][174]. The fact that Marguerite inherited land of her presumed nephew Jacques de Chacenay suggests that she was born from her mother´s first marriage to Jacques Seigneur de Chacenay, but this supposition is not beyond all doubt. "Theobaldus de Barro" noted the donation to Basse-Fontaine of "domum de Coveignon…et vineam Ruffe" made by "Agnes…quondam domina Chacenaii, mater uxoris mee Margarete et Hu--- de Durnaio", with the consent of "uxor mea", by undated charter which must presumably be dated to after [1191][175]. She is named in the same document as her husband[176]. Thibaut & his wife had two children