Individual Details

Marie of Avesnes

(1200 - 1241)

According to Wikipedia:

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.[1]

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.[2] They had five children:

John I (died 1280), Count of Blois[3]
Guy II (died 1289), Count of Saint Pol[3]
Gaucher (died 1261), lord of Crécy and Crèvecœur[3]
Hugh (died 1255)[3]
Basile (died 1280), became Abbess of Notre Dame du Val in 1248.
Her eldest son, John, succeeded her in Blois.[3]

References
(FR)Henri Platelle, Présence de l'au-delà: une vision médiévale du monde, (Presses Universitaires du Septentrion, 2004), 284.
Theodore Evergates, The Aristocracy in the County of Champagne, 1100-1300, (University of Pennsylvania Press, 2007), 223.
Theodore Evergates, The Aristocracy in the County of Champagne, 1100-1300, 254.

Events

Birth1200
Death1241

Families

SpouseHugh I, Count of Blois (1198 - 1248)
ChildGuy III, Count of Saint-Pol ( - 1289)
FatherWalter II of Avesnes (1170 - 1244)
MotherMargaret, Countess of Blois ( - 1230)