Henry had no sooner grasped power again than he fell back on his old policy. The queen became his chief adviser. The Duke of Somerset was released from the Tower and owned by Henry in formal court as his true and faithful liegeman. York on the other hand was deprived of the government of Calais, and summoned with his friends to a council at Leicester, whose object was to provide for the surety of the king's person. Prominent among these friends were two Earls of the house of Neville. We have seen how great a part the Nevilles played after the accession of the house of Lancaster; it was mainly to their efforts that Henry the Fourth owed the overthrow of the Percies, their rivals in the mastery of the north; and from that moment their wealth and power had been steadily growing. Richard Neville, Earl of Salisbury, was one of the mightiest barons of the realm; but his power was all but equalled by that of his son, a second Richard, who had won the Earldom of Warwick by his marriage with the heiress of the Beauchamps. The marriage of York to Salisbury's sister, Cecily Neville, had bound both the earls to his cause, and under his Protectorate Salisbury had been created Chancellor. But he was stripped of this office on the Duke's fall; and their summons to the council of Leicester was held by the Nevilles to threaten ruin to themselves as to York. The three nobles at once took arms to secure, as they alleged, safe access to the king's person. Henry at the news of their approach mustered two thousand men, and with Somerset, the Earl of Northumberland, and other nobles in his train, advanced to St. Albans. [Sidenote: The civil war]