Ernest Petit suggests that she was Ermengarde, daughter and heiress of Rainard Comte [de Bar-sur-Seine] & his wife ---, in order to explain how her granddaughter by Comte Milon, Eustachia, transmitted this county to her husband Gauthier de Brienne.
A family connection is indicated by the charter dated to [992/1005] uner which “Milo comes Tornodorensis castri” donated property "in villa…Curtis-Secreta" to the monastery of Saint-Michel, with the consent of “coniugis mee Ermengarde et carissimorum filiorum meorum Achardi, Rainardi et Alberici”, the property being the same as the subject of the [992] charter witnessed by "…Raynardus comes…". According to Ernest Petit, Ermengardis married secondly Heribert [IV] Comte de Vermandois. The author highlights a charter of Ermengarde Ctss de Vermandois witnessed by Rainard Comte de Tonnerre. He suggests that Rainard would only have done this if he were the son of Ermengarde... Settipani points out that Ermengardis is named as the wife of Héribert in a document of her father-in-law Albert I Comte de Vermandois, relating to the abbey of Homblières, dated some time between 982 and the death of Comte Albert (in 987). If the two marriages apply to the same Ermengarde, Comte Héribert must therefore have been her first husband and Comte Milon her second. However, it is not clear that this suggested co-identity is correct, a simpler explanation being that there were two different individuals named Ermengarde. "Raynardus comes Tornodorensis pagi et mater mea Ermengardis comitissa" donated "alodum nostrum…Cappam" to Saint-Michel by charter dated 1002, signed by "Odonis vicecomitis…". 2
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