There are several ranks of papal legates in diplomacy, some of which are no longer used.
Apostolic nuncio , sometime papal nuncio to
Urbino,
Ferrara,
Venice,
Parma, and
England. The most common form of papal legate today is the
apostolic nuncio, whose task it is to strengthen relations between the
Holy See and the Catholic Church in a particular country and at the same time to act as the diplomatic representative of the Holy See to the government of that country. An apostolic nuncio is generally equivalent in rank to that of
ambassador extraordinary and
plenipotentiary, although in
Catholic countries the nuncio often ranks above ambassadors in diplomatic protocol. A nuncio performs the same functions as an ambassador and has the same diplomatic privileges. Under the 1961
Vienna Convention on Diplomatic Relations, to which the Holy See is a party, a nuncio is an ambassador like those from any other country. The Vienna Convention allows the host state to grant seniority of precedence to the nuncio over others of ambassadorial rank accredited to the same country, and may grant the
deanship of that country's diplomatic corps to the nuncio regardless of seniority.
Pro-nuncio Pro-nuncio was a term used from 1965 to 1991 for a papal diplomatic representative of full ambassadorial rank accredited to a country that did not accord him precedence over other ambassadors and
ex officio deanship of the diplomatic corps. In those countries, the papal representative's precedence within the corps is exactly on a par with that of the other members of ambassadorial rank, so that he becomes dean only on becoming the senior member of the corps.
Apostolic delegate For countries with which the Holy See has no diplomatic relations, an apostolic delegate is sent to serve as a liaison with the Catholic Church in that country, though not accredited to its government.
Legatus natus Literally "born legate", i.e. not nominated individually but
ex officio, namely a bishop holding this rank as a privilege of his see, e.g.
archbishops of
Canterbury (pre-
Reformation),
Prague,
Esztergom,
Udine,
Salzburg,
Gniezno and
Cologne.
Legatus missus Literally "sent legate", possessing limited powers for the purpose of completing a specific mission. This commission is normally focused in scope and of short duration. == Gubernatorial legates ==