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Pope Leo XIII , reigned as Pope from 20 February 1878 to his death in 1903. He was the oldest pope , and had the third longest pontificate, behind that of Pius IX and John Paul II. He is the most recent pontiff to date to take the pontifical name of "Leo" upon being elected to the pontificate.

Pope
Bishop of Rome
Leo XIII..jpg
Pope Leo XIII
Papacy began 20 February 1878
Papacy ended 20 July 1903
Predecessor Pius IX
Successor Pius X
Orders
Ordination 31 December 1837
by Carlo Odescalchi
Consecration 19 February 1843
by Luigi Emmanuele Nicolò Lambruschini
Created Cardinal 19 December 1853
by Pius IX
Personal details
Birth name Vincenzo Gioacchino Raffaele Luigi Pecci
Born 2 March 1810
Carpineto Romano,
département of Rome, French Empire
Died 20 July 1903(1903-07-20) (aged 93)
Apostolic Palace,
Rome, Vatican City
Previous post
Coat of arms {{{coat_of_arms_alt}}}
Other popes named Leo
Papal styles of
Coat of arms of Pope Leo XIII.svg
Reference style His Holiness
Spoken style Your Holiness
Religious style Holy Father
Posthumous style None

Pope Leo XIII (Italian: Leone XIII), (born Vincenzo Gioacchino Raffaele Luigi Pecci; 2 March 1810 – 20 July 1903, to an Italian comital family,) reigned as Pope from 20 February 1878 to his death in 1903. He was the oldest pope (reigning until the age of 93), and had the third longest pontificate, behind that of Pius IX (his immediate predecessor) and John Paul II. He is the most recent pontiff to date to take the pontifical name of "Leo" upon being elected to the pontificate.

He is well known for his intellectualism, the development of social teachings with his famous papal encyclical Rerum novarum and his attempts to define the position of the Catholic Church with regard to modern thinking. He influenced Roman Catholic Mariology and promoted both the rosary and the scapular.

Leo XIII issued a record of eleven Papal encyclicals on the rosary earning him the title as the "Rosary Pope". In addition, he approved two new Marian scapulars and was the first pope to fully embrace the concept of Mary as Mediatrix. He was the first pope to never have held any control over the Papal States, after they were dissolved by 1870. He died on 20 July 1903 at the age of 93 and was briefly buried in the grottos of Saint Peter's Basilica before his remains were later transferred to the Basilica of Saint John Lateran.