MATHILDE de Bourgogne (1150-17 Dec [1219], bur Abbaye de Fontevraud). The Chronicle of Alberic de Trois-Fontaines names "Remundus" as father of "Mathildis comitisse Nivernensis"[252]. She succeeded her father as Ctss de Grignon, Dame de Vitteaux, and her mother as Dame de Montpensier. She succeeded her second husband in 1175 as Ctss de Tonnerre. Robert of Torigny records the marriage in 1177 of "Petrus frater Philippi comitis Flandrensium" and "comitissa Nivernensis quæ fuerat uxor domini Isoldunensis castri"[253]. The Chronologia Roberti Altissiodorenses records that, after the death of "Guido comes", his wife "Mathildis" married "Petro Flandrensis" and after his death "Roberto", stating that they were separated for consanguinity soon after their marriage[254]. "Matilidis comitissa" confirmed a previous donation to Cîteaux by "Agnes mater mea comitissa" for the soul of "patris mei Raimundi" with the consent of "filii mei Odo et Guillermus et Agnes et Ida" by charter dated 1179[255]. "Mathildis comitissa Nivernensis" donated property to Jully-les-Nonnains for the soul of "Guillelmi filii mei" and for the anniversaries of "…comitis Guidonis, comitis Petri, domini Odonis de Yxolduno" (her first three husbands) by charter dated 1182[256]. "Matildis comitissa" donated property to Cîteaux for the souls of "Guidonis comitis Nivernensis, Petri Flandrensis et Odonis" with the consent of "filie mee Agnes…filia comitis Guidonis et Sibilla filia comitis Petri flandrensis" by charter dated 1182[257]. After the annulment of her fourth marriage, she became a nun at Fontevraud. "Hugo…dux Burgundiæ et Albonii comes" confirmed "[cum] assensu filiorum meorum Oddonis et Alexandri" the concession to Cluny by "consanguineæ meæ Matildi comitissæ Tornodori" by charter dated 1186[258]. "Odo dominus Exolduni", on leaving for Jerusalem, confirmed the privileges of "burgensibus Exoldunensis castri" by charter dated 1190, witnessed by "domina M. comitissa Tornodori…"[259]. m firstly (before 15 Apr 1165) EUDES [II] Seigneur d'Issoudun, son of RAOUL [II] Sire d'Issoudun & his wife Alix --- (-1167). m secondly (1168) GUY [I] Comte de Nevers d'Auxerre et de Tonnerre, son of GUILLAUME [III] Comte de Nevers et d'Auxerre & his wife Ida of Carinthia ([1149]-Tonnerre, Yonne 18 Oct 1175). He refused to do homage to Hugues III Duke of Burgundy, was defeated and imprisoned at Beaune in April 1174[260]. m thirdly (1176) PIERRE de Flandre, son of THIERRY I Count of Flanders & his second wife Sibylle d'Anjou (-1176 before Aug). m fourthly ([1177/80], annulled on grounds of consanguinity 1181) as his first wife, ROBERT [II] de Dreux, son of ROBERT de France Comte de Dreux & his wife Agnès de Baudemont (-28 Dec 1218). He succeeded his father in 1188 as Comte de Dreux, de Braine et de Longueville.
http://fmg.ac/Projects/MedLands/BURGUNDY.htm#_Toc146942724