Pietro Lorenzetti
St Leonard; St Catherine of Alexandria, St Margaret of Antioch, before 1320, tempera on panel

The triptych depicts Saint Leonard, Saint Catherine of Alexandria, and Saint Margaret of Antioch, and is the fruit of a nineteenth century re-composition, which makes use of a rich Gothic style frame.
Originally the individual panels formed part of a polyptych, formerly in the church of Saints Leonard and Christopher at Monticchiello, which presented at its centre the Madonna with Child (now in the Diocesan Museum of Pienza), and yet another panel with Saint Agatha (now at the Musée de Tessé at Le Mans, in France).
The attribution to Pietro Lorenzetti is unanimously accepted by scholars, who date the work to the first phase of the artist’s activity, prior to 1320, based on stylistic and technical comparisons with some of his subsequent works.