Portrait of Johann Joachim Winckelmann (1717–1768)

This 1777 canvas at the Metropolitan Museum of Art is a posthumous portrait of Johann Joachim Winckelmann, murdered in Trieste in 1768. Mengs, who had been Winckelmann's closest friend in the Roman art world, took particular interest in perpetuating his image after his death. By 1777, Winckelmann's theoretical works had transformed European aesthetic culture, and a posthumous portrait by Mengs—who had known him intimately—carried the combined authority of artistic mastery and personal testimony. The Metropolitan's portrait differs from the Hermitage version, and its attribution to Mengs with a later date suggests it may have been based on earlier sketches or other portraits rather than direct sittings. It belongs to the broader project of commemorating Winckelmann as the founding father of Neoclassical thought, transforming the murdered scholar into a cultural saint of the new aesthetic religion.

Oil on canvas with the careful psychological attention Mengs brought to portraits of close acquaintances. The posthumous nature of the work required reliance on previous portraits and memory rather than direct observation, which Mengs compensates for with characterological depth—the attempt to capture the intellectual spirit rather than a momentary external appearance.