Family: Robert, Comte de Namur / Elisabeth Or Isabella, Holland (F2494)
m. 1354Guillaume III de Avesnes, Count (1280-1337) 
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Jeanne de Valois, Hainault (1295-1352)
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| Sibylla, Countess of Holland (1310- ) |
Margaretha, Countess of Holland (1311-1356)  |
| Jan, Count of Holland (1313-1316) |
| Philippa Countess of Hainault (1314-1369) |
| Johanna, Countess of Holland (1315-1374) |
| Willem IV Count Holland (1317-1345) |
| Agnes, Countess of Holland (1320-1327) |
| Louis, Count of Holland (1325-1328) |
| Elisabeth, Countess of Holland (1327- ) |
| Robert, Comte de Namur (1323- ) |
| Elisabeth Or Isabella, Holland (1323-1361)
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