bigger; Gerald of Wales commented on this wealth with these words: Petit Dutailli had commented that: "Richard maintained a superiority in resources which would have given him the opportunity, had he lived, to crush his rival." There is another interpretation, not widely followed and proven wrong, that the king of France could have raised a stronger income, that the royal principality of the king of France generated alone more incomes than all the Angevin Empire combined. Formation of the Angevin Empire Background The Counts of Anjou had been vying for power in northwestern France since the 10th century. The counts were recurrent enemies of the dukes of Normandy and of Brittany and often the French king. Fulk IV, Count of Anjou, claimed rule over Touraine, Maine and Nantes; however, of these only Touraine proved to be effectively ruled, as the construction of the castles of Chinon, Loches and Loudun exemplify. Fulk IV married his son and namesake, called "Fulk the Younger" (who would later become King of Jerusalem), to Ermengarde, heiress of the province of Maine, thus unifying it with Anjou through personal union. While the dynasty of the Angevins was successfully consolidating their power in France, their rivals, the Normans, had conquered England in the 11th century. Meanwhile, in the rest of France, the Poitevin Ramnulfids had become Dukes of Aquitaine and of Gascony, and the Count of Blois, Stephen, the father of the next king of England, Stephen, became the Count of Champagne. France was being split between only a few noble families. The Anarchy and the question of the Norman succession In 1106, Henry I of England had defeated his brother Robert Curthose and angered Robert's son, William Clito, who was Count of Flanders from 1127. Henry used his paternal inheritance to take the Duchy of Normandy and the Kingdom of England and then tried to establish an alliance with Anjou by marrying his only legitimate son, William, to Fulk the Younger's daughter, Matilda. However, William died in the White Ship disaster in 1120. As a result, Henry then married his daughter Matilda to Geoffrey "Plantagenet", Fulk's son and successor; however, Henry's subjects had to accept Matilda's inheritance to the throne of England. There had been only one occurrence of a medieval European queen regnant before, Urraca of León and Castile, and it wasn't an encouraging precedent; nevertheless, in January 1127 the Anglo-Normans barons and prelates recognized