Each of the great Barons kept a Court, and indulged in a style of pageantry corresponding in an inferior degree to that of Royalty, of which he occasionally affected independence. When the great Earl Warrenne was questioned respecting the right to his vast land possessions, he drew his sword, saying that was his title, and that William did not himself conquer England, but that his ancestor with the rest of the Barons were joint adventurers in the enterprise. As the Barons were so powerful, the Sovereign never made war or undertook any other great enterprise without first convoking and consulting them, as their co-operation was necessary to his success. In fact, such was their position in the realm, that no change in the laws or government, nor any great act of administration, could be accomplished without their advice and consent. Hence they formed with the ecclesiastical hierarchy, the sole and supreme legislative council of the Sovereign. Independently of the necessity for their advice and co-operation in national enterprises, the Sovereign was desirous of convoking the Barons to his councils at stated periods, as a badge of fealty, and to remind them of their allegiance to Royalty; which in the autocratic retirement of their castles, and the solitude of their manors, they were prone to forget. Whensoever any of the Barons rebelled against the royal authority, the Sovereign assembled the other Barons to assist him in suppressing the mutiny. If on the other hand any Baron should be unable to repel the encroachments of a neighbor, he appealed to the Sovereign as the supreme liege for help to resist and punish the aggression, which with the aid of other chieftains was generally granted. The Sovereign therefore stood in the same relation to the Barons of the whole realm, as they individually to their vassals, the feudal theory being, that all land was held ultimately from the Sovereign in return for military and other services, failing which it reverted to the Crown.