Leda and the Swan (Michelangelo) Francis I of France, who later sent it to the Palace of Fontainebleau. The best known copy is attributed to Rosso Fiorentino and hangs in the National Gallery in London, with others in the Gemäldegalerie (Dresden), the Gemäldegalerie (Berlin) and the Correr Museum in Venice. The Casa Buonarroti in Florence holds not only a copy but also a preparatory drawing of Leda's head, held to be by Michelangelo himself. There are also several prints of the work, the most faithful of which is thought to be the one by Nicolas Béatrizet, which also shows Castor and Pollux. Leda and the
Ab ovo "soup to nuts". Thus "ab ovo" can also be used to mean a complete or entire thing. Ab ovo Ab ovo (Latin: "from the beginning, the origin, the egg") is a reference to one of the twin eggs from which Helen of Troy was born. The eggs were laid by Leda after mating with Zeus disguised as a swan. Had Leda not laid the egg, Helen would not have been born, so Paris could not have eloped with her, so there would have been no Trojan War. The English literary use of the phrase comes from Horace's "Ars Poetica", where