It's one of the most dramatic stories from fifteenth-century Florence. In 1478, the Pazzi, a well-established Florentine banking family, with support from Pope Sixtus IV, the king of Naples, and the archbishop of Pisa, and others, hatched a plot so daring as to almost appear ridiculous: to kill Giuliano and Lorenzo de' Medici in order to take control of Florence. On Sunday, April 26, during high mass in the Duomo, assassins, armed with knives, attacked the two brothers. Francesco de' Pazzi and Bernardo Bandini Baroncelli stabbed Giuliano 19 times, killing him. Two armed priests went for Lorenzo, but Lorenzo fled with only a wound and locked himself in the north sacristy. Retribution was swift and brutal; the governing council of Florence ordered the public execution of most conspirators in a very bloody few days. All Pazzi property was confiscated and the Pazzi name destroyed. As a result, the Medici were stronger than ever.