The Sketchbook Project!
Did this the other day at lunch. The reference photo was in a book about sculpture. This piece is by Michelangelo and it's the head of Duke Giuliano De' Medici. Who I think was a nephew of Lorenzo the Magnificent. Not sure about that. I'd have to check. I think that Magnifico had a brother named Giuliano, but I don’t think he lived long enough to become a duke, since he died in the assassination of 1478. Oh those whacky Italians!
Actually the sculpture is probably somewhat stylized, since it really resembles the famous "David" statue. I have a feeling that the Medicis weren’t that good looking.