Jean Pierre Thibault des Marchais (1674-1728), Chevalier des Marchais Rôle d'équipage Mémoire des hommes was a French cartographer, navigator, and captain of the slave ship "l'Expédition" (1724), who travelled extensively in the west coast of Africa, the West Indies and the northwest coast of South America between 1704 and 1727, under service to the King of France. His maps and manuscripts were published posthumously by Père J. B. Labat in Amsterdam in 1730–31.Labat, J. B. 1731. Voyage du Chevalier des Marchais en Guinée, Isles Voisines, et à Cayenne, en 1725-27. Amsterdam. Ordre des Frères Prêcheurs; cited by Joseph J. Williams, S. J. 1932. Voodoos and obeahs / Phases of West India witchcraft. Lincoln Mac Veagh Dial Press Inc. New York. Facsimile Internet edition
Des Marchais mapped the Kingdom of Whydah in 1725, two years before its capture by Dahomey; he also provided the most detailed description of the coronation of King Haffon which he dated from the same year.Harms, Robert. 2002. The Diligent: A Voyage through the Worlds of the Slave Trade. New York: Basic Books.
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