After Francois Eisen (1695-1778) Cerebrus Chained by Hercules, watercolour 44 by 35 cm Eisen was a well known painter of religious, allegorical and mythological subjects, and his illustrations of the story of Hercules were widely circulated as engravings. This particular compostion was reproduced both in France (in the Abbe Banier's French translation of Ovid's Metamorphoses), (1767-1769) and in England in William Walker's print in the copper-plate magazine or a Monthly treasure, 1774