Saint Bartholomew, ca. 1317?19, Tempera on wood, gold ground, Overall, with arched top and engaged frame, 11 5/8 x 8 5/8 in. (29. 5 x 21. 9 cm) ; painted surface 10 3/8 x 7 3/4 in. (26. 4 x 19. 7 cm), Paintings, Workshop of Simone Martini (Italian, Siena, active by 1315?died 1344 Avignon), Six other panels from the series are known. All were owned by the German painter and collector Johann Anton Ramboux in the nineteenth century, and they formed either the predella or a row of figures above the main panels of an altarpiece