Etienne Chevalier with St. Stephen

Jean Fouquet's diptych panel of Étienne Chevalier with his patron saint Stephen was originally the left wing of a devotional diptych; its right wing, showing the Virgin and Child, is now in Antwerp. Chevalier was treasurer to Charles VII of France, and he commissioned Fouquet around 1450–1455, shortly after the artist's formative journey to Italy where he encountered the new Flemish illusionism filtering through Rome. Stephen, the first Christian martyr, kneels beside his patron holding the stone instrument of his martyrdom. The architectural setting — white marble pilasters with blue veining — announces Fouquet's synthesis of Flemish precision and Italian spatial logic, unprecedented in French painting of the period.

Fouquet's technique is meticulous and Flemish in spirit: thin oil glazes build luminous flesh, and the marble architecture is rendered with trompe-l'oeil precision. The portrait of Chevalier achieves a psychological solidity rare in French painting before 1460, with light falling from the left to model the head in three dimensions.