But it was not till after 1545, when the mines of Potosi made Europe dream of El Dorado, the great new Golden West, that England began to think of trying her own luck in America. Some of the fathers of Drake's "Sea-Dogs" had already been in Brazil, notably "Olde Mr. William Hawkins, a man for his wisdome, valure, experience, and skill in sea causes much esteemed and beloved of King Henry the Eight." Hawkins "armed out a tall and goodlie ship called the Pole of Plimmouth, wherewith he made three long and famous voyages into the coast of Brasil." He went by way of Africa, "where he trafiqued with the Negroes, and took of them Oliphants' teeth; and arriving on the coast of Brasil, behaved himself so wisely, that he grew into great friendship with those savages"--very different from the vile cruelty with which the Spaniards always treated the poor natives. These voyages were made about 1530; and the writer says that they were "in those days very rare, especially to our Nation." In 1554 Charles V planned to make all such voyages work for the glory of Spain instead of England. But, thanks chiefly to the English Sea-Dogs, everything turned out the other way. Charles saw that if he could only add England to his vast possessions he could command the world; for then he would have not only the greatest land-power but the greatest sea-power too. Queen Mary seemed made for his plan. Her mother, Katharine of Aragon, Henry VIII's first wife, was a Spaniard, and she herself cared less for England than for Spain. She was only too ready to marry Charles's heir, Philip, of Armada fame. After this Charles would leave his throne to Philip, who would then be King of England as well as King of Spain.