[Henry Duke of Warwick] [art original].[not after 1768]zxxDrawing of six dukes and duchess of Warwick and ClarenceTitle from item.Formerly attributed to George Vertue. See Christie's sale catalog.Originally drawn by John Rous. Horace Walpole had the drawings traced and then engraved for his Historic doubts on the life and reign of Richard III. See London edition, 1768 and Strawberry Hill edition 1770.