The Great Officers had and have varying duties. The Lord High Steward was originally a holder of significant political power, but the office gradually became ceremonial, as have those of the Lord Great Chamberlain, Lord High Constable, and the Earl Marshal, all of them traditionally hereditary. The Lord High Treasurer, Lord High Constable, and Lord High Admiral were originally responsible for monetary, military, and naval matters respectively. The Lord President of the Council is responsible for presiding over the meetings of the Privy Council. The office of Lord Privy Seal is a sinecure, though he is technically the Keeper of the Privy Seal. The Lord Chancellor is the most important of the Great Officers: he is the cabinet minister responsible for the Ministry of Justice (formerly the Lord Chancellor's Department and the Department for Constitutional Affairs) and formally Keeper of the Great Seal.