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
Succession to the Spanish throne Succession to the Spanish throne Spain uses the system of male-preference cognatic primogeniture. Dynasts who marry against the express prohibition of the monarch and the "Cortes" are excluded from the succession together with their descendants. A prohibition expressed only by the monarch or only by the "Cortes" will have no consequences to the succession. Disputes about the succession are to be settled by legislation. Upon his succeeding to the throne, the monarch is required by article 61(1) of the 1978 constitution to take an oath on the occasion of his being proclaimed before the Cortes Generales. The above list is