Pope Sixtus IV

Pope Sixtus IV
Pedro Berruguete · Public domain · source
Name	Francesco della Rovere
Papacy	1471–1484
Birth date	21 July 1414
Birth place	Genoa, Republic of Genoa
Death date	12 August 1484
Death place	Rome, Papal States
Predecessor	Pope Paul II
Successor	Pope Innocent VIII
Other	Cardinal of Santo Stefano al Monte Celio

Pope Sixtus IV

Francesco della Rovere served as pope from 1471 to 1484, presiding over the Catholic Church during a period of intense Italian Wars precursors, Renaissance cultural expansion, and diplomatic entanglement among Kingdom of France, Crown of Castile, Kingdom of Naples, and the Holy Roman Empire. His pontificate is noted for institutional reforms within the Roman Curia, extensive patronage of Renaissance art, and involvement in papal politics that shaped successors such as Pope Alexander VI and Pope Julius II.

Early life and career

Francesco della Rovere was born in Genoa and later joined the Order of Friars Minor Conventual, studying at the University of Perugia and serving in Liguria and Piedmont before rising to prominence under Pope Eugene IV and Pope Nicholas V. He became Cardinal of Santo Stefano al Monte Celio through the influence of Pietro Barbo and was noted for connections to families such as the Della Rovere family and ties with ecclesiastical figures including Bishop Giovanni de' Medici and Cardinal Raffaele Riario. His early administrative roles involved interactions with institutions like the Apostolic Camera and missions to courts in Florence, Milan, and Bologna while engaging with contemporaries such as Lorenzo de' Medici and Federico da Montefeltro.

Election and papacy

Elected in 1471, his accession followed the death of Pope Paul II and a conclave influenced by factions aligned with King Louis XI of France, the Kingdom of Aragon, and the Roman nobility represented by the Colonna family and Orsini family. His papacy established patronage networks that connected the Roman Curia to courts including Hungary under Matthias Corvinus and the Kingdom of Castile under Isabella I. He appointed numerous cardinals from houses such as the Sforza, Medici, and Este and reconstituted institutions like the Rota Romana and the Congregation of the Inquisition in ways that affected bishops across France, England, and Poland.

Political and diplomatic activities

Sixtus IV engaged in diplomacy with principalities and monarchs including Ferdinand II of Aragon, Charles VIII of France (as duke during his early career), and Alfonso V of Aragon in matters of Naples succession and papal territorial consolidation in the Papal States. He fostered alliances and rivalries involving the Republic of Venice, the Duchy of Milan under Francesco Sforza and Gian Galeazzo Sforza, and the Kingdom of Naples during the reign of Ferdinand I of Naples. His interventions included mediation in disputes such as those with Savoy and support for family interests through the creation of secular lordships for the Della Rovere family in the Marche and the Castel Sant'Angelo administration, intersecting with figures like Giovanni della Rovere and Duke Guidobaldo da Montefeltro.

Patronage of the arts and architecture

A major patron, he commissioned works by artists and architects such as Sandro Botticelli, Piero della Francesca, Domenico Ghirlandaio, and Antoniazzo Romano, and engaged builders like Bramante (early career contacts), Antonio del Pollaiuolo, and Baldassarre Peruzzi for projects in Rome and the Vatican. He founded the Sistine Chapel—named for him—and employed painters including Pietro Perugino, Pinturicchio, Iacopo della Quercia (sculpture precedents), and Filippo Lippi for fresco cycles and altarpieces, while commissioning urban works such as renovations to St. Peter's Basilica and fortifications in Civita Castellana. His artistic patronage connected to collectors and humanists like Poggio Bracciolini, Angelo Poliziano, Marsilio Ficino, and Lorenzo Valla, intersecting with libraries such as the Biblioteca Vaticana and antiquarian interests that influenced later patrons including Cardinal Giuliano della Rovere.

Ecclesiastical policies and reforms

He reformed the Roman Curia by restructuring the Apostolic Chancery and expanding the College of Cardinals with appointments from houses like the Aragonese, Valois, and Medici, affecting ecclesiastical governance in dioceses such as Milan, Seville, and Toledo. Sixtus IV convened commissions addressing canonical procedures involving the Roman Rota and papal tribunals, issued decretals impacting episcopal nominations in regions like Hungary and Poland, and supported missions to the Holy Land and negotiations with the Ottoman Empire under Mehmed II. His policies touched theological figures such as Girolamo Savonarola (later conflicts with papal authority) and jurists within the Canon law tradition like Antonio Agustín antecedents.

Controversies and legacy

His papacy was marked by controversies including involvement in the Pazzi Conspiracy against the Medici in Florence, strained relations with Cosimo de' Medici's heirs like Lorenzo de' Medici, and accusations of nepotism through grants to relatives such as Giovanni della Rovere and Girolamo Riario. He faced criticism over financial practices linked to institutions like the Apostolic Camera and episodes that implicated figures including Luca Pacioli (accounting developments) and Bartolomeo Platina (historiography). Long-term legacy includes artistic monuments such as the Sistine Chapel and institutional precedents that shaped the careers of successors like Pope Alexander VI and Pope Julius II, affecting later conflicts like the Italian Wars and reforms leading to movements involving Martin Luther and Erasmus of Rotterdam in the following century. His burial site in Saint Peter's Basilica and the ongoing historiographical debate engage scholars from institutions such as the Bibliothèque nationale de France, the Vatican Library, and universities like Oxford, Cambridge, and the Università di Roma La Sapienza.

Category:Popes Category:15th-century popes