, 15th-century terracotta bust,
National Gallery of Art, Washington Lorenzo, groomed for power, assumed a leading role in the state upon the death of his father in 1469, when he was 20. Already drained by his grandfather's building projects and constantly stressed by mismanagement, wars, and political expenses, the assets of the Medici Bank were reduced seriously during the course of Lorenzo's lifetime. Lorenzo, like his grandfather, father, and son, ruled Florence indirectly through surrogates in the city councils by means of payoffs and strategic marriages until 1490. Rival Florentine families inevitably harboured resentments over the Medicis' dominance, and enemies of the Medici remained a factor in Florentine life long after Lorenzo's passing. Salviati acted with the blessing of his patron
Pope Sixtus IV. Giuliano was killed, brutally stabbed to death, but Lorenzo escaped with only a minor wound to the neck, having been defended by the poet
Poliziano and the banker
Francesco Nori, the latter of whom was killed in the attack. News of the conspiracy spread throughout Florence, and it was brutally put down by the populace through such measures as the lynching of the archbishop of Pisa and members of the Pazzi family who were involved in the conspiracy. In the aftermath of the Pazzi conspiracy and the punishment of supporters of Pope Sixtus IV, the Medici and Florence earned the wrath of the
Holy See, which seized all the Medici assets that Sixtus could find,
excommunicated Lorenzo and the entire government of Florence, and ultimately put the entire Florentine city-state under
interdict. When these moves had little effect, Sixtus formed a military alliance with King
Ferdinand I of Naples, whose son,
Alfonso, Duke of Calabria, led an invasion of the Florentine Republic, still ruled by Lorenzo. , painting by
Giorgio Vasari and
Marco da Faenza,
Palazzo Vecchio, Sala di Lorenzo the Magnificent,
Florence. Lorenzo rallied the citizens. However, with little support from the traditional Medici allies in
Bologna and
Milan, Efforts to acquire revenue from the mining of
alum in Tuscany unfortunately marred Lorenzo's reputation. Alum had been discovered by local citizens of
Volterra, who turned to Florence to get backing to exploit this important natural resource. A key commodity in the glassmaking, tanning and textile industries, alum was available from only a few sources under the control of the Ottomans and monopolized by
Genoa before the discovery of alum sources in Italy at
Tolfa. First the
Roman Curia in 1462, and then Lorenzo and the Medici Bank less than a year later, got involved in backing the mining operation, with the pope taking a two-ducat commission for each cantar
quintal of alum retrieved and ensuring a monopoly against the Turkish-derived goods by prohibiting trade in alum with infidels. When they realized the value of the alum mine, the people of Volterra wanted its revenues for their municipal funds rather than having it enter the pockets of their Florentine backers. Thus began an insurrection and secession from Florence, which involved putting to death several opposing citizens. Lorenzo sent mercenaries to suppress the revolt by force, and the mercenaries ultimately sacked the city. Lorenzo hurried to Volterra to make amends, but the incident would remain a dark stain on his record. ==Patronage==