Moreover, feudalism was dying, and the feudal armies controlled by the barons became obsolete. Such castles were beyond the means of feudal barons. The powers exercised by the Cambro-Norman barons and the Old English nobility waned over time. There were specific coronets for counts, barons, and nobility. Disagreements between the barons and the king intensified. In 1258, Henry faced a revolt among the English barons. The disagreements between the leading barons involved in the revolt soon became evident. For examples of fictional barons and baronesses, see List of fictional nobility#Barons and baronesses. In 1215, some of the most important barons rebelled against him. King John regrets succumbing to the pressure of the barons to sign Magna Carta. Friction intensified between the barons and the king. Instead, Henry purchased the kingdom for his son Edmund, which angered many powerful barons. He endowed Hagano with monasteries that were already the benefices of other barons, alienating them. Duncan was able to recruit further levies from local barons and towns of England. Henry responded by mounting campaigns against the rebel barons and deepening his alliance with Theobald.