The concept of two popes serving simultaneously is not a scene from a theological fantasy but a stark historical reality that fractured the Catholic Church. For nearly four decades, from 1378 to 1417, the Western Church endured the Great Western Schism, a period where rival claimants to the papal throne wielded incense and excommunication against one another. This event remains the definitive answer to how two popes can exist in the same era, creating a complex tapestry of obedience, politics, and divine legitimacy that continues to challenge historians.
The Birth of a Division: The Return to Rome
The schism began not with a bang but with a weary sigh of relief. After nearly 70 years in Avignon, France, the papacy returned to Rome in 1377 with Pope Gregory XI. His decision to re-establish the Holy See in Italy was met with jubilation, but the French cardinals, fearing the volatile Roman mob, soon elected a successor from their ranks just months after Gregory’s death in 1378. Pope Urban VI, an Italian, was elected first, but his temperamental nature frightened the cardinals, who then declared his election invalid and selected Clement VII, a Frenchman, creating the first official split.
Political Loyalties and National Schisms
What started as a canonical dispute rapidly devolved into a geopolitical chess match. Nations abandoned the universal church in favor of regional loyalty. France, Scotland, Castile, and Aragon threw their support behind Clement VII in Avignon. Meanwhile, the Holy Roman Empire, England, Hungary, and the Scandinavian kingdoms remained loyal to Urban VI in Rome. This meant that a German prince and a French nobleman could both believe they were praying to the same spiritual father, while denouncing the other as an antipope driven by greed rather than faith.
The Escalation: Councils and Confusion
For decades, the faithful were subjected to a bewildering duality. Baptisms were valid, marriages were consecrated, and masses were celebrated under both pontificates, leaving ordinary Catholics unsure which side held the true mandate. Theologians scrambled to justify the impossible, while canon lawyers debated the validity of sacraments administered by the "wrong" pope. The financial strain was immense, as each pope demanded tithes, built rival courts, and funded private armies, draining the resources of Christendom and eroding the Church’s moral authority.
1394: The University of Paris declares the Roman pope illegitimate.
1409: The Council of Pisa attempts to resolve the crisis by electing a third pope, resulting in a chaotic trifecta.
1414: The Council of Constance finally forces the resignation of the last rival claimants.
The Resolution: Unification and Legacy
The path to resolution was paved with compromise and danger. The Council of Constance (1414–1418) employed a novel strategy: all three popes were invited to abdicate, with the promise of immunity. Gregory XII of Rome and Benedict XIII of Avignon complied, while the Pisan pope, John XXIII, was deposed. In 1417, the cardinals elected Pope Martin V, finally restoring a single, undisputed leader. This event cemented the idea that the authority of the papacy was not merely personal but institutional, subject to the collective judgment of the Church.
The shadow of the double papacy stretches long into the modern era. While the specific politics of the 14th century are unlikely to repeat, the theological questions linger. How does the Church define infallibility when exercised by men locked in temporal struggle? The ghost of the Great Schism serves as a perpetual reminder that the office of Peter, while viewed as divine, is still administered by fallible humans. Understanding this period is essential to grasping the resilience of an institution that survived its own fragmentation.
