Pope Sixtus IV, born Francesco della Rovere , 1414-1484 Posthumus portrait by Titian. Sixtus IV sponsored the building of the Sistine Chapel (It takes its name from him- Sisto in Italian), and re-founded, enriched and enlarged the Vatican Library, one of the oldest in the world.
Sixtus IV Papacy began 9 August 1471 Papacy ended 12 August 1484 Predecessor Paul II Successor Innocent VIII Orders Consecration 25 August 1471 by Guillaume d’Estouteville Created Cardinal 18 September 1467 Personal details Birth name Francesco della Rovere Born 21 July 1414 Celle Ligure, Republic of Genoa Died 12 August 1484 (aged 70) Rome, Papal States
King Ferrante, was king of Naples. In 1478 he allied himself with Pope Sixtus IV against Lorenzo de' Medici, but the latter journeyed alone to Naples where he succeeded in negotiating an honorable peace with Ferdinand. The time of conflict was very hard on the region and the terms were a hard blow to Florences. The Medici bank had already been declining, but it accelerated after this.
Pope Sixtus IV (Latin: Xystus IV; 21 July 1414 – 12 August 1484), born Francesco della Rovere, was Pope from 9 August 1471 to his death in 1484. His accomplishments as pope included building the Sistine Chapel