While most of the offices became hereditary at an early stage, currently some officers are appointed, while others inherit their positions. The Lord High Stewardship was held by the Earls of Leicester until 1399 when the holder became the Sovereign; and since 1421, a Lord High Steward has generally only been appointed temporarily for special occasions such as a coronation or, before 1948, for the trials of peers. The office of Lord Great Chamberlain is also hereditary, originally being held by the Earls of Oxford. Later, however, the Chamberlainship came to be inherited by the Earl of Lindsey and then his multiple heirs, each holding a fraction of the office. One of the holders, chosen by rotation, exercises the office as a Deputy. The post of Lord High Constable was originally inherited by the Earls of Hereford, until when one holder was attainted and executed in 1521, the office reverted to the Crown, only to be reinstated for the day of a coronation. The final inheritable office is that of Earl Marshal, held by the Dukes of Norfolk. During the many periods in which the Dukes were attainted, another individual was appointed to the post. Furthermore, prior to 1824, the Earl Marshal had to appoint a Protestant Deputy if he was a Roman Catholic.