 | This article needs additional citations for verification. (February 2015) |
Marie, Countess of Ponthieu | |
|---|---|
| Born | 17 April 1199 |
| Died | 21 September 1250 (aged 51) |
| Spouse(s) | Simon of Dammartin Mathieu de Montmorency, Seigneur d'Attichy |
| Issue | Joan of Dammartin Mathilda of Dammartin Philippe of Dammartin Maria of Dammartin |
| Father | William IV of Ponthieu |
| Mother | Alys, Countess of the Vexin |
Marie of Ponthieu (17 April 1199 – 21 September 1250) was suo jure Countess of Ponthieu and Countess of Montreuil, ruling from 1221 to 1250.