Naval Memorandum, entirely autograph and signed by Stewart as Captain of H.M. Ship Seahorse, to Captain Mitford of H.M. Brig L’Espoir, instructing him to complete his ship’s water and other provisions, and to join Rear Admiral Martin at Milazzo. 1 page 12 x 8 inches, folds, three small holes, some water stains. H.M. Ship Seahorse, Palermo, 14 June 1810. The naval exploits of Captain John Stewart R.N. (1774-1811) of HMS Seahorse were utilised by Patrick O’Brien in his Aubrey-Maturin series. There is a Memorial to Stewart in Westminster Abbey. The Memorial records Stewart’s daring action in the Seahorse against a Turkish squadron in the Mediterranean.