The Lord High Steward of Ireland is a hereditary Great Officer of State in the United Kingdom, sometimes known as the Hereditary Great Seneschal. The Earls of Shrewsbury (Earls of Waterford in the Peerage of Ireland) have held the office since the 15th century. Although the Irish Free State, later the Republic of Ireland, became independent in 1922, the title remained the same, rather than reflecting the region of Northern Ireland, which remains within the United Kingdom.