Francis de la Rovere was born in 1414, and entered the Franciscan order, became provincial of Liguria, and finally general of the order. He was elevated to be Cardinal by the advice of Bessarion, who had conceived a high notion of his learning and abilities. He became Pope in 1471 and occupied the papal chair till 1484, and was perhaps the second wickedest pontiff seated on that throne, coming only a short way after Alexander VI.
"He began his career with a lie," says Mr. Addington Symonds, "for though he succeeded to the avaricious Paul, who had spent his time in amassing money which he did not use, he declared that he had only found 5,000 florins in the Papal treasury. This assertion was proved false by the prodigality with which he lavished wealth immediately upon his nephews. It is difficult even to hint at the horrible suspicions which were cast upon the birth of two of the Pope's nephews. Yet the private life of Sixtus rendered the most monstrous stories plausible. We may, however, dwell on the principal features of his nepotism; for Sixtus was the first pontiff who deliberately organised a system for pillaging the Church in order to exalt his own family to principalities. The names of the Pope's nephews were Leonardo, Giuliano, and Giovanni della Rovere, the three sons of his brother Raffiello; Pietro and Girolamo Riario, the two sons of his sister Jolanda; and Girolamo, the son of another sister, married to Giovanno Basso. With the notable exception of Giuliano della Rovere, these young men had no claim to distinction beyond good looks and a certain martial spirit which ill suited with the ecclesiastical dignities thrust upon some of them. Leonardo was made Prefect of Rome and married to a natural daughter of King Ferdinand of Naples. Giuliano received a cardinal's hat, and after a tempestuous warfare with the intervening Popes, ascended the holy chair as Julius II. Girolamo Basso was created Cardinal of San Cristogono."