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.
John Cabot
Information about the 1497 voyage comes mostly from four short letters and an entry in a 1565 chronicle of the city of Bristol. The chronicle entry for 1496/7 says in full:
"This year, on St. John the Baptist's Day [24 June 1497], the land of America was found by the Merchants of Bristow in a shippe of Bristowe, called the Mathew; the which said the ship departed from the port of Bristowe, the second day of May, and came home again the 6th of August next following." –
G.E. Weare, "Cabot's Discovery of North America," (London, 1897), p. 116