Introduction—A.D. 1486. Columbus before the conclave of Professors at Seville—His parentage and early history—Battle with Venetian galleys—Residence in Portugal—Marries widow of a navigator—Grounds on which he founded his theory—Offers his services to the King of Portugal—His offer declined—Sends his brother Bartholomew to Henry the Seventh of England—Don John sends out a squadron to... more...