Lorenzo. Although the patrons of many works not for churches remain unclear, Botticelli seems to have been used more by Lorenzo il Magnifico's two young cousins, his younger brother Giuliano, and other families allied to the Medici. Tommaso Soderini, a close ally of Lorenzo, obtained the commission for the figure of Fortitude of 1470 which is Botticelli's earliest securely dated painting, completing a series of the Seven Virtues left unfinished by Piero del Pollaiuolo. Possibly they had been introduced by a Vespucci who had tutored Soderini's son. Antonio Pucci, another Medici ally, probably commissioned the London Adoration of the Magi, also around 1470. Giuliano de' Medici was assassinated in the Pazzi conspiracy of 1478 (Lorenzo narrowly escaped, saved by his bank manager), and a portrait said to be Giuliano which survives in several versions may be posthumous, or with at least one version from not long before his death. He is also a focus for theories that figures in the mythological paintings represent specific individuals from Florentine high society, usually paired with Simonetta Vespucci, who John Ruskin persuaded himself had posed nude for Botticelli. Last years According to Vasari, Botticelli became a follower of the deeply moralistic Dominican friar Girolamo Savonarola, who preached in Florence from 1490 until his execution in 1498: Botticelli was a follower of Savonarola's, and this was why he gave up painting and then fell into considerable distress as he had no other source of income. None the less, he remained an obstinate member of the sect, becoming one of the piagnoni, the snivellers, as they were called then, and abandoning his work; so finally, as an old man, he found himself so poor that if Lorenzo de' Medici ... and then his friends and ... [others] had not come to his assistance, he would have almost died of hunger. The extent of Savonarola's influence on Botticelli remains uncertain; his brother Simone was more clearly a follower. The story, sometimes seen, that he had destroyed his own paintings on secular subjects in the 1497 bonfire of the vanities is not told by Vasari. Vasari's assertion that Botticelli produced nothing after coming under the influence of Savonarola is not accepted by modern art historians. The Mystical Nativity, Botticelli's only painting to carry an actual date, if one cryptically expressed, comes from late 1500, eighteen months after Savonarola died, and the development of his style can be traced