The Birth of Venus Dorotheus". Pliny also noted a second painting by Apelles of Venus "superior even to his earlier one," that had been begun by artist but left unfinished. The Roman images in various media showing the new-born Venus in a giant shell may well be crude derivative versions of these paintings. Botticelli could not have seen the frescos unearthed later in Pompeii, but may well have seen small versions of the motif in terracotta or engraved gems. The "House of Venus" in Pompeii has a life-size fresco of Venus lying in the shell, also seen in other works; in most other images
Sandro Botticelli Pollaiuolo and others, although views on this differ. A Botticello who was probably Sandro's brother Giovanni was close to 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 Pollaiuolo. Possibly they had been introduced by a Vespucci