Mathilde de Bourgogne, dame de Montferrier

MATHILDE de Bourgogne ([1135]-before 29 Sep 1173). The Chronicle of Alberic de Trois-Fontaines refers to, but does not name, one of the sisters (named first in the list of sisters) of "Lingones…episcopus Galterus [et] episcopum Eduensem Henricum" as "mater Guilelmi de Montepessulano domni"[270]. The contract of marriage between "Guillelmus Montispessulani dominus" and "Mathildem sororem Ducis Burgundiæ" is dated 25 Feb 1157, and names "Guillelmus de Tortosa frater meus"[271]. Under his testament dated 29 Sep 1173, "Guillelmus dominus Montispessulani, filius quondam Sibilie" states that his wife Mathilde was already deceased and requests payment of her debts[272]. m (contract Montpellier 25 Feb 1157) GUILLAUME [VII] Seigneur de Montpellier, son of GUILLAUME [VI] Seigneur de Montpellier & his wife Sibila de Mataplana (-[29 Sep 1172/May 1173], bur Abbaye de Granselve).

http://fmg.ac/Projects/MedLands/BURGUNDY.htm