Biography
Guillaume de Dampierre, Lord of Dendermonde, Lord of Richebourg, Lord of Crèvecœur, was born after 1249 to Gui de Dampierre (1225-1305) and Mahaut de Béthune (c1220-1264) and died 1311 of unspecified causes. He married Alix de Clermont (c1270-1320) 1286 JL .
Children
| Name | Birth | Death | Joined with |
| Guillaume II de Termonde (1288-1320) | |||
| Jean de Termonde (1290-1325) | 1290 | 2 May 1325 | Beatrix de Châtillon (1294-c1341) |
| Guy de Dampierre (-1345) | April 1345 | Marie d'Enghien (-1318) Beatrix van Putten und Strijen (-1354) | |
| Alix de Termonde (1295-) | |||
| Marie de Termonde (1300-c1347) | 1300 | 1350 | Robert VII d'Auvergne (1282-1325) |
| Jeanne de Termonde | |||
Footnotes (including sources)
| ‡ General |