This portrait of a knight of Saint John, identifiable by the eight-pointed cross around his neck, has been newly attributed to Polidoro. It was probably painted when the Order of Saint John was temporarily resident in Messina, Sicily, having been expelled from Rhodes. Polidoro trained with Raphael in Rome but moved to Messina in 1528. Franciabigio also depicted a member of the Order in his 'Portrait of a Knight of Rhodes'.
The National Gallery, Trafalgar Square, London WC2N 5DN