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
Stephen, King of England to be handed over to Stephen. On 15 December, Henry delivered an agreement under which Stephen would grant extensive freedoms and liberties to the church, in exchange for the Archbishop of Canterbury and the Papal Legate supporting his succession to the throne. There was the slight problem of the religious oath that Stephen had taken to support the Empress Matilda, but Henry convincingly argued that the late King had been wrong to insist that his court take the oath. Furthermore, the late King had only insisted on that oath to protect the stability of the kingdom, and in light of