Pope Boniface IX

Pope Boniface IX (c. 1350 – 1 October 1404), born Piero Tomacelli, was the second Roman Pope of the Western Schism, from 2 November 1389 until his death. During this time the Antipopes Clement VII and Benedict XIII continued to hold court as pope in Avignon under the protection of the French monarchy. He was the last Pope who bore the name Boniface.

Piero (also Perino, Pietro) Tomacelli came of an ancient but impoverished baronial family of Casarano in the Kingdom of Naples. An unsympathetic German contemporary source, Dietrich of Nieheim, asserted that he was illiterate (nesciens scribere etiam male cantabat). Neither a trained theologian nor skilled in the business of the Curia, he was tactful and prudent in a difficult era, but Ludwig Pastor, who passes swiftly over his pontificate, says, "The numerous endeavours for unity made during this period form one of the saddest chapters in the history of the Church. Neither Pope had the magnanimity to put an end to the terrible state of affairs" by resigning. After his election at the papal conclave of 1389, Germany, England, Hungary, Poland, and the greater part of Italy accepted him as Pope. The remainder of Europe recognized the Avignon Pope Clement VII. He and Boniface mutually excommunicated each other.

The day before Tomacelli's election by the fourteen cardinals who remained faithful to the papacy at Rome, Clement VII at Avignon had just crowned a French prince, Louis II of Anjou, as king of Naples. The youthful Ladislaus was the rightful heir of King Charles III of Naples, assassinated in 1386, and Margaret of Durazzo, scion of a line that had traditionally supported the popes in their struggles in Rome with the anti-papal party in the city itself. Boniface IX saw to it that Ladislaus was crowned King of Naples at Gaeta on 29 May 1390 and worked with him for the next decade to expel the Angevin forces from southern Italy.