The Chronicle of Alberic de Trois-Fontaines in 1193 records the marriage of "Henrici comitis ceci" and "Agnate sorore comitis de Gelre". In a later passage, the same source names "Agneta…comitissa de Luscelenborch" as sister of "soror comitis de Geldern", who was the mother of "domnus Engelbertus filius comitis Engelberti de Monte Veteri frater comitis Adolfi", specifying that she was mother of "Ermensindis relicta comitis Barri uxor Waleranni". The Chronicon Hanoniense names "Agnetam filiam Henrici…comitis de Ghelre" as wife of "Henricus comes Namurci et Luscelenborch".
She left her husband, entered a convent and refused to return to him despite his appeal to Pope Alexander III. A reconciliation was negotiated in 1185 by the Archbishop of Köln, Philippe Count of Flanders and Godefroi Duke of Brabant, anxious to ensure that Namur and Luxembourg was not inherited by Baudouin V Comte de Hainaut (the nominated successor of Comte Henri).
The necrology of Floreffe records the death "IX Kal Feb" of "Agnetis comitisse de Gelra". 1
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