Mario Mattei (born 6 September 1792, died 7 October 1870) was an Italian Cardinal, of the Roman noble House of Mattei. He became Dean of the College of Cardinals.

Personal life

Mattei was born on 6 September 1792 in Pergola.

He was educated at the Collegio Ghislieri, a Roman Seminary, and at the La Sapienza University where he received a doctorate in utroque iure) and later attended the Pontifical Academy of Ecclesiastical Nobles in 1810[1].

Elevation to Cardinal

He was elevated to Cardinal in 1832 and was subsequently appointed to the following posts[2]:

Vatican service

In 1843, Mattei was appointed as Arch-Priest of St. Peter's Basilica and held this position until his death in 1870.

Records indicate that Mattei was appointed Camerlengo of the Sacred College of Cardinals twice; between 1834 and 1835 and between 1848 and 1850

He was appointed Dean of the College of Cardinals in 1860.

He was a participant in the First Vatican Council and in the Papal Conclave of 1846 that elected Pope Pius IX.


Catholic Church titles
Preceded by
Ludovico Micara
Cardinal-Bishop of Frascati
Succeeded by
Antonio Maria Cagiano de Azevedo
Preceded by
Luigi Lambruschini
Cardinal-Bishop of Porto e Santa Rufina
Succeeded by
Giuseppe Milesi Pironi Ferretti
Preceded by
Vincenzo Macchi
Cardinal-Bishop of Ostia
Succeeded by
Costantino Patrizi Naro
Preceded by
Giacomo Giustiniani
Arch-Priest of St. Peter's Basilica
Succeeded by
Niccola Clarelli Parracciani
Preceded by
Luigi Gazzoli
Camerlengo of the Sacred College of Cardinals
18341835 (1st Term)
Succeeded by
Nicola Grimaldi
Preceded by
Castruccio Castracane degli Antelminelli
Camerlengo of the Sacred College of Cardinals
18481850 (2nd Term)
Succeeded by
Giacomo Luigi Brignole
no:Mario Mattei

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