A Chaplain of His Holiness is a priest to whom the Pope has granted this title. They are addressed as Monsignor and have certain privileges with respect to ecclesiastical dress and vestments. In accordance with the motu proprio Pontificalis Domus of 28 March 1968, those priests who had been called Supernumerary Privy Chamberlains continued to be part of the Papal Household, under the new name of Chaplains of His Holiness. Lower ranks of Privy Chamberlains (Honorary Chamberlains of Purple Robes, Chamberlains extra Urbem, Honorary Privy Chaplains, and Honorary Chaplains extra Urbem) were abolished, making Chaplain of His Holiness the first (lowest) of the three ranks of Monsignor.