Unless we are to suppose that Vasari mistook a copy for an original.
Francesco Torbido, called "il Moro," born about 1490, and still living in 1545. Vasari states that he actually worked under Giorgione. Signed portraits by him are in the Brera, at Munich, and Naples. Palma Vecchio also deserves serious consideration as possible author of the "Shepherd Boy."
Crowe and Cavalcaselle, ii. 144.