• Born: Ath, Hainault, Belgium
• Married (1):
• Married (2):
• Died: After 1129

  Research Notes:

The Chronicle of Alberic de Trois-Fontaines refers to the daughters of "Galterum de Aat" & his wife, specifying that one married "Gerardo de Audenarde, que peperit Arnulfum et Godefridum atque Heinricum et ceteros". same person as...? IDA de Ath.... Ida de Ath is named in secondary sources as the wife of Guy de Chièvres, but the primary source which confirms her family origin has not yet been identified. She is named in the charter dated 1161 under which [her daughter] “Domina Eva de Cirvia que dicitur Domisons” donated “medietatem ville...Erbisul” to Ghislenghien, stated to have been founded by “genitricis nostre Ide”. Her co-identity with the wife of Gossuin [II] de Mons was suggested by Roland in his study of the seigneur de Florennes/Rumigny. The debate revolves around two charters which name the founder of the abbey of Saint-Ghislain. Firstly, [her son] Nicolas de Mons Bishop of Cambrai confirmed the property of Saint-Ghislain founded by “genetricis nostræ Idæ”, including the donation of “tertiam partem...in Gisbecca” donated by “Gascuinus frater noster de Mons” for the soul of “matris nostræ Idæ” and “aliam partem in eadem villa Gisbecca” donated by “Domina Æva quæ cognominatur Domoisuns" for the soul of "viri sui Ægidii", by charter dated 1143. Secondly, the charter dated 1161 which is quoted above. The former document dated 1143 makes it clear that Gossuin [III] de Mons and Eva de Chièvres jointly owned “villa Gisbecca” which, if the present hypothesis is correct, would have been inherited from their mother. From a chronological point of view, the hypothesis is workable: the daughter of Guy de Chièvres had one child by her first husband who was killed in 1137, which would be possible if Gossuin [II] died in the early part of the date range [1122/26] and his widow had remarried immediately after his death. A rather garbled variation of the hypothesis was indicated by Gazet in the early 17th century when he said that Nicolas Bishop of Cambrai was “issu de la noble famille de Widon seigneur de Chieures et de madame Ide”. The chronology would be very tight for Nicolas also to have been born from his mother’s supposed second marriage. An alternative hypothesis would be if Saint-Ghislain was founded jointly by two noblewoman named Ida (who would presumably have been closely related to each other) and that the documents dated 1143 and 1161 name these two different persons. Ida is named in two documents in relation to the family of Gossuin de Mons. Reiffenberg records that “Ide” returned serfs to Saint-Ghislain, in the presence of “ses fils Gossuin et Isaac et d’Isembert leur oncle”, by charter dated 1126. “Isaac” donated serfs to Saint-Ghislain, for the souls of “mon père Gossuin de Mons et...de ma mère Ide”, with the consent of “mes frères Nicolas et Gossuin et ma sœur Ermengarde avec son mari Gautier”, by charter dated 1135. ¹