Leif Erikson
Leif Erikson or Leif Ericson ( 970 – c. 1020) was a Norse explorer from Iceland. He was the first known European to have set foot on continental North America (excluding Greenland), before Christopher Columbus. According to the Sagas of Icelanders, he established a Norse settlement at Vinland, tentatively identified with the Norse L'Anse aux Meadows on the northern tip of Newfoundland in modern-day Canada. Later archaeological evidence suggests that Vinland may have been the areas around the Gulf of St. Lawrence and that the L'Anse aux Meadows site was a ship repair station.
Matthias Ringmann
"There is a fourth quarter of the world which Amerigo Vespucci has discovered and which for this reason we can call 'America' or the land of Americus [the Latin version of the Italian name Amerigo]. […] We do not see why the name of the man of genius, Amerigo, who has discovered them, should not be given to these lands, as Europe and Asia have adopted the names of women."