For 10 points, name this "Admiral of the Ocean Sea," a Genoese explorer who led four voyages to the New World.
Most serious scholars point to this man's letter to the Bank of Saint George as evidence for the standard account of his geographic origins.  Delno West and August King first translated into English a book by this man in which he predicted the release of Mount Zion from the infidels and asserted that the Orinoco had been one of the rivers of Eden; that collaboration with Gaspar Gorriti was entitled the Book of Prophecies.  After becoming dissatisfied with the vast numbers of slaves he sent to Europe, this man's patrons ordered Francisco de Bobadilla to replace him in one administrative post, though he retained the title (*) almirantazgo.  This subject of the Capitulations of Santa Fe is perhaps better known as the first governor of Hispaniola.  For 10 points, name this "Admiral of the Ocean Sea," a Genoese explorer who led four voyages to the New World. 
Most serious scholars point to this man's letter to the Bank of Saint George as evidence for the standard account of his geographic origins.  
Christopher Columbus