John Riley Painter, Egbert van Heemskerck II, circa 1762

John riley (1646-1691). Thought to have come from a well-off family he established himself as the best portrait paintewr in london. He was appointed a court painter by william and mary although no portraits of them by riley are known. [1] one of his apprentices was jonathan richardson who married riley's niece and inherited a large number of old masters from riley. Date: circa 1762. Dimensions: height: 18.9 cm (7.4 in); width: 14 cm (5.5 in). Medium: line engraving. Collection: National Portrait Gallery.