She is a direct ancestor of both the Kings of the Netherlands and the Grand Dukes of Luxembourg.
Matilda was the youngest daughter of Count Otto I of Guelders and Zutphen and Richardis of Bavaria,[1][2] daughter of Otto I Wittelsbach, Duke of Bavaria and Agnes of Loon.
Matilda is among others mentioned in the following charters: The necrology of Arnstein Abbey records the death of ‘Mecktildis comitisse de Nassauw sororis nostre’ on 28 October.
She is last mentioned in a charter from 1247, therefore she died on 28 October in 1247 or a later year.
Matilda married before 11 December 1215 to Count Henry II "the Rich" of Nassau (c. 1180[1] – 26 April 1247/48/49/50, before 25 January 1251).