Biography
Marie de Dreux was born 1268 to Jean II de Bretagne (1239-1305) and Beatrice of England (1242-1275) and died 1339 of unspecified causes. She married Guy III de Châtillon (c1254-1317) 1292 JL .
Children
| Name | Birth | Death | Joined with |
| Mahaut de Châtillon (1293-1358) | 1293 | 3 October 1358 | Charles de Valois (1270-1325) |
| Isabeau de Châtillon (-1360) | |||
| Jean de Châtillon (aft1292-1344) | 1292 | 1344 | Jeanne de Fiennes (aft1307-1353) |
| Beatrix de Châtillon (1294-c1341) | 1294 | 1341 | Jean de Termonde (1290-1325) |
| Marie de Châtillon (c1303-1377) | |||
Footnotes (including sources)
| ‡ General |