The Secret of the Unicorn Rackham's looks and costumes were also inspired by the character, Lerouge, who appears in C. S. Forester's novel, "The Captain from Connecticut", and by the 17th-century French buccaneer Daniel Montbars. The name of Marlinspike Hall— in French—was based upon the name of the real Belgian town, Sart-Moulin. The actual design of the building was based upon the Château de Cheverny, albeit with the two outer wings removed. In introducing Francis Haddock to the story, Hergé made Captain Haddock the only character in the series (except Jolyon Wagg, introduced later) to have a family and an ancestry. "The Secret of the
Captain Haddock since creating Tintin." Sales of the volume in which Haddock was introduced indicated the character was well received. After a fairly serious role in "The Shooting Star", where he has risen to become the President of the Society of Sober Sailors (replete with a cabin full of rum), Haddock takes a more central role in the next adventure, split over two books, "The Secret of the Unicorn" and "Red Rackham's Treasure"— indeed, his family history drives the plot. Upon locating the treasure, the newly wealthy Haddock retires. Hergé built the next adventure around Haddock, furnishing the character with an ancestral