Pope Sixtus IV

Justus van Gent's Pope Sixtus IV belongs to the series of popes depicted in the Urbino studiolo program, representing the papacy's spiritual authority within Federico da Montefeltro's comprehensive display of intellectual and religious legitimacy. Sixtus IV was Federico's contemporary pope and political ally, the builder of the Sistine Chapel and the pope who authorized the Spanish Inquisition, making his inclusion in the studiolo a statement of the Duke's close relationship with papal Rome rather than merely historical commemoration.

Tempera technique, reflecting earlier traditions, the portrait demonstrates Justus van Gent's command of skilled technique and careful observation. The careful modeling of the face reveals close study of the sitter's physiognomy, while the treatment of costume and setting projects appropriate social standing.