This altarpiece was made in the workshop of Leonardo da Vinci around 1487 or 1488 (not later!); the two elder kneeling gentlemen, Ermes Maria Sforza again (on the bottom right) and his half-brother Alessandro Sforza (on the bottom left), Count of Galliate, were added to the work around 1502 or 1503.
Galeazzo Maria Sforza († 1476, assassinated), Duke of Milan
Bona of Savoy († 1503)
he remained unmarried
Die Sforza III: Isabella von Aragon und ihr Hofmaler Leonardo da Vinci
488 Seiten, 322 Abbildungen und Stammtafeln, €49.90 (Format 21 x 27 cm)