Giacomo Giustiniani

Giacomo Giustiniani (1769–1843) was an Italian papal diplomat and Cardinal. Considered papabile in the Papal Conclave (1830–31), his election was vetoed by Ferdinand VII of Spain.[1]

Giacomo Giustiniani
President of the Congregation of the Reverend Basilica of Saint Peter
ChurchRoman Catholic Church
Appointed1 July 1837
Term ended24 February 1843
PredecessorPietro Francesco Galleffi
SuccessorMario Mattei
Other posts
Ordination21 December 1816
Consecration20 April 1817
by Alessandro Mattei
Created cardinal2 October 1826
by Pope Leo XII
RankCardinal-Priest (1827–39)
Cardinal-Bishop (1839–43)
Personal details
Birth nameGiacomo Giustiniani
Born29 December 1769
Rome, Papal States
Died24 February 1843(1843-02-24) (aged 73)
Rome, Papal States
BuriedSanta Maria sopra Minerva
ParentsBenedetto Giustiniani
Cecilia Carlotta Mahoni
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Alma materLa Sapienza University
Styles of
Giacomo Giustiniani
External Ornaments of a Cardinal Bishop.svg
Reference styleHis Eminence
Spoken styleYour Eminence
Informal styleCardinal
SeeCardinal bishop of Albano

He was the younger brother of Vincenzo Giustiniani, 6th Prince Giustiniani, de jure 6th Earl of Newburgh.[2]

His career in the priesthood was interrupted by the Napoleonic Wars, and he was ordained in 1816. In 1817 he was papal nuncio in Spain and became titular archbishop of Tyre. He became bishop of Imola in 1826.

He was created Cardinal by Pope Leo XII in 1826. He became bishop of Albano in 1839 and he became Camerlengo in 1837.


  1. ^ Sede Vacante 1829, 1830
  2. ^ proc, Parliament lords (1830-01-01). 4 papers relating to claims to the earldom of Newburgh.

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