House of Blois chose a wife from the House of Champagne (Adela of Champagne) as a counterpoise to Angevin power. The senior line of the House of Blois became extinct with the death of Joan I of Navarre, wife of Philip IV of France, in 1305. Champagne and Navarre passed to the Capetian dynasty. King Stephen I of England, 1135–1154, was both a member of the House of Blois and the last Anglo-Norman King, being the grandson of William the Conqueror through his daughter Adela of Normandy. A branch of the family was established in Sancerre by Stephen I of Sancerre, a younger
Treaty of Blois (1504) betrothed to her second cousin, the future Francis I of France. This seemed the likely outcome from the start, as Claude's mother, Anne of Brittany, was the only participant truly eager for the match (it would have kept her duchy of Brittany out of the control of the French crown). Treaty of Blois (1504) The Treaty of Blois (1504), also known as the First Treaty of Blois, was an agreement between Louis XII of France and the Holy Roman Emperor, Maximillian I and his son Archduke Philip, the father of the future Emperor Charles V. It was signed on September