The Birth of Venus to Botticelli's Florentine contemporary, and Lorenzo di Medici's court poet, Angelo Poliziano. The iconography of "The Birth of Venus" is similar to a description of a relief of the event in Poliziano's poem the "Stanze per la giostra", commemorating a Medici joust in 1475, which may also have influenced Botticelli, although there are many differences. For example Poliziano talks of multiple Horae and zephyrs. Older writers, following Horne, posited that "his patron Lorenzo di Pierfrancesco asked him to paint a subject illustrating the lines", and that remains a possibility, though one difficult to maintain so confidently today. Another poem by
Portrait of a Man with a Medal of Cosimo the Elder resembles this. He is also sometimes claimed to be the subject of other Botticelli portraits, with completely different features (e.g. Pitti Palace, wearing a chaperon). The appearance at auction in 1982, from the Thomas Merton collection, of a rarely seen painting by Botticelli of a young man identified (with no real evidence) as Giovanni il Popolano in a similar pose, holding up a round medallion cut from a much older painting (albeit of a bearded saint, not Cosimo), has led to speculation that this might be a companion piece, and thus that the young man in this portrait is possibly