Eleanor of Blois (1102–1147) was a daughter of Stephen II, Count of Blois

Stephen II, Count of Blois

Stephen II Henry , Count of Blois and Count of Chartres, was the son of Theobald III, count of Blois, and Garsinde du Maine. He married Adela of Normandy, a daughter of William the Conqueror around 1080 in Chartres...

, and of Adela of Normandy

Adela of Normandy

Adela of Normandy also known as Adela of Blois and Adela of England was, by marriage, Countess of Blois, Chartres, and Meaux. She was a daughter of William the Conqueror and Matilda of Flanders...

. She married Raoul I of Vermandois and became mother of Hugh II of Vermandois (1127 to 1212), count of Vermandois and of Valois, then monk in 1160. Eleonor's marriage with Raoul I of Vermandois  was dissolved at the request of Eleanor of Aquitaine

Eleanor of Aquitaine

Eleanor of Aquitaine was one of the wealthiest and most powerful women in Western Europe during the High Middle Ages. As well as being Duchess of Aquitaine in her own right, she was queen consort of France and of England...

, whose sister Petronilla of Aquitaine

Petronilla of Aquitaine

Petronilla of Aquitaine was the daughter of William X of Aquitaine and Aenor of Châtellerault. She was the sister of Eleanor of Aquitaine, who was Queen consort of England...

 was in love with Raoul. This led to a war with Theobald II of Champagne

Theobald II of Champagne

Theobald the Great was Count of Blois and of Chartres as Theobald IV from 1102 and was Count of Champagne and of Brie as Theobald II from 1125....

, who was Eleonor's brother. The war lasted two years (1142–1144) and ended with the occupation of Champagne by the royal army. Eleonor died in 1147.