Despite motivic correspondences, this version departs significantly from an earlier one devoted to the same saint (inv. no. 371). This is visible not just in the warm, dark-hued colour scheme, but in the painting style in particular: the streaky accents of light in the mane of the white horse and the rider’s garments are reminiscent of Venetian painting. During his stay in Italy, Van Dyck especially studied works by Titian and Tintoretto. ‘St Sebastian’ and ‘Susanna and the Elders’ (inv. no. 595) were both produced in Italy as commissions from the Flemish merchant Gaspar Roomer, a resident of Naples.