William I, Marquis of Namur | |
|---|---|
| Born | 1324 |
| Died | 1 October 1391 |
| Noble family | House of Dampierre |
| Spouse(s) | Jeanne of Hainault Catherine of Savoy-Vaud |
| Father | John I, Marquis of Namur |
| Mother | Marie of Artois |
William I (1324 – 1 October 1391), also called the Rich, was Count of Namur from 1337 until his death.