Joan, Countess of Blois
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Joan of Châtillon was countess of Blois
Count of Blois
The County of Blois was originally centred on Blois, south of Paris, France. One of the chief cities, along with Blois itself, was Chartres. Blois was associated with Champagne, Châtillon , and later with the French royal family, to whom the county passed in 1391...

 from 1280 to 1292, and lady of Avesnes.

She was the daughter of John I and Alix of Brittany, Dame de Pontarcy
Alix of Brittany, Dame de Pontarcy
Alix of Brittany, Dame de Pontarcy, Countess of Blois , was a Breton noblewoman and a member of the House of Dreux as the eldest daughter of John I, Duke of Brittany. She married John I, Count of Blois...

. Her maternal grandparents were John I, Duke of Brittany
John I, Duke of Brittany
John I the Red , known as John the Red due to the colour of his beard, was Duke of Brittany, from 1237 to his death...

, and Blanche of Navarre.

In 1263, Joanne married Peter of Alençon
Peter, Count of Perche and Alençon
Peter of France or Peter I of Alencon was the son of Louis IX of France and Margaret of Provence. He became Count of Alençon in 1269 and in 1284, Count of Blois and Chartres, and Seigneur de Guise in 1272 and 1284.He was born in the Holy Land while his father headed the Seventh Crusade...

, a son of King Louis IX of France
Louis IX of France
Louis IX , commonly Saint Louis, was King of France from 1226 until his death. He was also styled Louis II, Count of Artois from 1226 to 1237. Born at Poissy, near Paris, he was an eighth-generation descendant of Hugh Capet, and thus a member of the House of Capet, and the son of Louis VIII and...

 and Queen Margaret of Provence. They had 2 children, Louis (1276—1277) and Philippe (1278—1279), who died young. Peter died in 1284.

Joan received the County of Chartres from her father during his life; she later sold these lands to Philip IV of France
Philip IV of France
Philip the Fair was, as Philip IV, King of France from 1285 until his death. He was the husband of Joan I of Navarre, by virtue of which he was, as Philip I, King of Navarre and Count of Champagne from 1284 to 1305.-Youth:A member of the House of Capet, Philip was born at the Palace of...

 in 1291. She ceded the lordship of Avesnes to her cousin Hugh before her death. When she died in 1292 the other titles were left to him, too.
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