Nielsen Hayden genealogy
Descendants of Hervé IV
- 1270Father: Guillaume II ( - Between 1250 and 1252)
Mother: Blanche de Joigny
Hervé IV ( - 1270 Tunis, Tunisia)
Jeanne de Brenne ( - Mar 1298)(m. Abt 1261)
   └─ Jeanne de Vierzon et Berry ( - Bef 22 Apr 1296)
    Godfried of Brabant (Abt 1255 Brussels, Flanders - 11 Jul 1302 Kortrijk, Flanders)(m. 1280)
       └─ Isabella of Brabant ( - Aft 26 Nov 1350)
        Gerhard V (Abt 1250 - 29 Jul 1328)
            + Elizabeth von Kleve ( - 12 Nov 1346)(m. 1330)