This composition, particularly the motif of the Virgin reading with the Child asleep, his head resting on his fist, features in several works by Portelli, each differing in details in the background, or in the palette. The present work most closely relates to a panel in the Musée Municipal Paul Dini, Villefranche-sur-Saône.1
The Villefranche-sur-Saône painting is dated to 1535–40, and like the present work also features the green fabric background tied at the upper right and left corners with coloured cords.
1 92 x 71.5 cm.; inv. no. 1975.47; see L. Brunori and A. Cecchi, Carlo Portelli, Pittore eccentrico tra Rosso Fiorentino e Vasari, exh. cat., Florence 2015, p. 140–45, cat. no. 18, reproduced p. 141.