Irish heraldry is the forms of heraldry, such as coats of arms, in Ireland. Since 1 April 1943 it is regulated in the Republic of Ireland by the Office of the Chief Herald of Ireland and in Northern Ireland by Norroy and Ulster King of Arms. Prior to that, heraldry on the whole island of Ireland was a function of the Ulster King of Arms, a crown office dating from 1552. Despite its name the Ulster King of Arms was based in Dublin.