In 1511 the Papal banker Agostino Chigi was the richest man in Rome, and a generous patron of the arts. Early in the year he was sent to Venice by Pope Julius II to buy Venetian support for the papacy in the War of the League of Cambrai. When he returned to Rome after a stay of some six months, he brought Sebastiano with him; Sebastiano was to remain based in Rome for the rest of his life. Sebastiano began by painting mythological subjects in lunettes in the "Sala di Galatea" in Chigi's Villa Farnesina, under a ceiling just done by Baldassarre Peruzzi. In these he already shows an adaption to Roman style, especially that of Michelangelo, whose Sistine Chapel ceiling had just been completed. Probably the next year, he added a large "Polyphemus". It is possible that Raphael's famous "Galatea" of 1514, which is in the next bay and now dominates the room, replaced a fresco by Sebastiano. A larger cycle on the lower walls was apparently intended, but abandoned, for reasons that are not clear.