Marie Capet d'Artois was born circa 1291 to Philippe d'Artois (1269-1298) and Blanche de Bretagne (1270-1327) and died 1365 of unspecified causes. She married Jean I de Namur (1267-1330) 6 March 1310 JL in Paris.
Children
| Name | Birth | Death | Joined with |
| Jean II de Namur (1311-1335) | |||
| Gui II de Namur (1312-1336) | |||
| Henri de Namur (1313-1333) | |||
| Blanche de Namur (1320-1363) | 1320 | 1363 | Magnus IV of Sweden (1316-1374) |
| Philippe III de Namur (1319-1337) | |||
| Marie de Namur (1322-1357) | |||
| Marguerite de Namur (1323-1383) | |||
| Guillaume I de Namur (1324-1391) | |||
| Robert de Namur (c1325-1392) | |||
| Louis de Namur (1325-1382) | |||
| Elisabeth de Namur (1329-1382) | |||