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 Wales to pacify the region. Neither mission was particularly successful, and by the end of 1137 the King appears to have abandoned attempts to put down the rebellion. Historian David Crouch suggests that Stephen effectively "bowed out of Wales" around this time to concentrate on his other problems. Meanwhile, Stephen had put down two revolts in the south-west led by Baldwin de Redvers and Robert of Bampton; Baldwin was released after his capture and travelled to Normandy, where he became an increasingly vocal critic of the King. The security of Normandy was also a concern. Geoffrey of Anjou invaded in