(active 1317–27). Sienese painter, a close follower of Duccio, in whose workshop he probably trained. His only certain work is a large polyptych painted for the high altar of S. Croce, Florence; it once bore the signature ‘Ugolino da Siena’, but this has disappeared. The altarpiece was dismantled in the 16th century and is now widely dispersed; several panels are in the National Gallery, London.
Text Source: The Oxford Dictionary of Art and Artists (Oxford University Press)