Although Antonello de Messina can be considered as the main influence in this portrait, it is nonetheless divorced from the types of the Sicilian artist. Previously the character was identified with Bartolomeo Colleoni of Bergamo. Other proposed proposed identifications are those with Jacopo Marcello, Vittore Pavoni and Bartolomeo d'Alviano. Each of these identifications has led to different chronological placings, ranging from 1475 to after 1500.
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