Marie of Avesnes
| Mary, Countess of Blois | |
|---|---|
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| Spouse(s) | Hugh I of Châtillon |
| Noble family | House of Avesnes |
| Father | Walter of Avesnes |
| Mother | Margaret of Blois |
| Born | 1200 |
| Died | 1241 |
Mary, Countess of Blois, also known as Marie of Avesnes, (1200–1241) was countess of Blois from 1230 to 1241.
She was the daughter of Walter of Avesnes and Margaret of Blois.
In 1226, Mary married Hugh I of Châtillon, a count from Châtillon-sur-Marne, son of Gaucher III of Châtillon and Elisabeth of Saint Pol. They had five children:
Her eldest son John, succeeded her in Blois.
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