| Father | Jean II D' AVESNES [COUNT OF HOLLAN (1247 - 1304) |
| Mother | Philippina (Philippa) COUNTESS LUXEMBOURG-MAAS (1252 - 1311) |
| Sibling | Henri de AVESNES DOMHERR OF KAMMERICH (1271 - 1303) |
| Sibling | Alix D' AVESNES (1273 - 1317) |
| Sibling | Marguerite D' AVESNES (1274 - ) |
| Sibling | Isabelle D' AVESNES (1275 - 1305) |
| Sibling | Jean D' AVESNES [COUNT DE OSTREV (1278 - 1302) |
| Sibling | Ida D' AVESNES (1294 - 1351) |
| Sibling | Jeanne D' AVESNES (1279 - ) |
| Sibling | Willem III D' AVESNES [COUNT OF HAINAU (1280 - 1337) |
| Sibling | Marie D' AVESNES HAINAULT (1280 - 1354) |
| Sibling | Valeran De Hainault (1282 - ) |
| Sibling | Jean D' AVESNES [SEIGNEUR DE BEA (1288 - 1356) |
| Sibling | Willem CUSER (1290 - 1355) |
| Sibling | Simon D' AVESNES [SEIGNEUR DE BRU (1291 - 1356) |