Difference between Amerigo Vespucci and Americus Vespucius

AMERIGO VESPUCCI vs AMERICUS VESPUCIUS: NOUN

Florentine navigator who explored the coast of South America; America was named in his honor (1454-1512)

Florentine navigator who explored the coast of South America; America was named in his honor (1454-1512)

Hanseatic league, Conquistadores, Hernando cortes, Francisco pizarro, Petrarch, Thor heyerdahl, Cristobal colon, Caravel, Ferdinand magellan, Verrazzano, Genoese, Pilgrim fathers, Cristoforo colombo, Americus vespucius, Vespucci

Strabo, Giuseppe garibaldi, Hanseatic league, Conquistadores, Hernando cortes, Francisco pizarro, Petrarch, Thor heyerdahl, Cristobal colon, Caravel, Ferdinand magellan, Verrazzano, Genoese, Pilgrim fathers, Cristoforo colombo

Some authorities suppose that both John Cabot and Amerigo Vespucci had explored and mapped part of the coast.
Why is it so difficult tascertain the real name of the man known as Amerigo Vespucci?
Hernando Columbus, and Amerigo Vespucci were among the experienced pilots called in for the task.
North America and South America are named after Italian navigator Amerigo Vespucci.
Lungarno Amerigo Vespucci, in an historical building which once housed the prestigious Hotel du Sud.
The explorers Christopher Columbus, Ferdinand Magellan, and Amerigo Vespucci all sailed from right here.
Conveniently located restaurants include Capeesh, Goodman Canary Wharf, and Amerigo Vespucci.
Giovanni da Verrazano, Jacrues Cartier, and Amerigo Vespucci, explored further north.
German mapmaker who falsely credits Amerigo Vespucci with its discovery.
Florence Amerigo Vespucci airport is just 40 km away.