Ghent Altarpiece
For Robert Rosenblum, Ingres's model was the figure of God the Father on the "Ghent Altarpiece" by Jan van Eyck, which was in the Louvre at the time Ingres painted this portrait. The contemporary critic Pierre-Jean-Baptiste Chaussard compared Ingres's style in this portrait to that of Van Eyck (then known as Jean de Bruges):