Portrait depicting Roman Emperor, perhaps Vitellius; Bernardino Campi and workshop

Oil on canvas depicting the figure of a Roman emperor, perhaps Vitellius;
M. Tanzi, Selection of Ancient Masters, 2016, p. 7

«…by a Roman Emperor coming out of the carriage
workshop of Bernardino himself in the final years of the 1537th century, in close stylistic connection with the four series that Campi copied from the Titian Caesars in the Palazzo Ducale in Mantua. However, the canvas poses some problems, in the sense that this sort of corpulent John Goodman of the Big Lebowski does not actually correspond to any of the images of the eleven Caesars that had been painted by Titian between 1539 and XNUMX for Federico II Gonzaga; and not even the twelfth, Domitian, the one missed by Titian and invented by Bernardino Campi for his serial replicas.
The question therefore arises whether this is not the possible reflection of Bernardino's elaboration of his Domitian, later resolved according to very different formulas; that is, it is a copy of a country painting for another series of illustrious figures of antiquity (but always connected to the model of Vitellio Grimani), unfinished and left in the painter's workshop, served as a model for his collaborators..."