Amerigo Vespucci was an Italian explorer who was the first to propose the idea of a "New World" and the Americas carry his name.
The Vespucci family into which Amerigo was born was a distinguished mercantile name. Amerigo is the son of Ser Nastagio and his wife, Lisabetta Vespucci. He is their third son. Prior to 1912, the date of Amerigo's birth was in dispute. The date and place have been definitively established as 9 March 1454 by primary documents. His record of birth was recorded in books of the "Ufficio delle Tratte", which are preserved in the "Reale Archivio di Stato" of Firenze, Italia (Florence, Italy). This English translation of the passage is a direct quote. "Amerigo, son of Ser Nastagio, son of Ser Amerigo Vespucci, on the IX day of March MCCCCLI". 
Wikipedia contributors. "Amerigo Vespucci." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 16 Sep. 2015. Web. 13 Oct. 2015. Link to article
Uzielli, Gustavo. "Amerigo Vespucci." The Catholic Encyclopedia. Vol. 15. New York: Robert Appleton Company, 1912. 12 Oct. 2015 Link to article.
The books of the Ufficio delle Tratte, preserved in the Reale Archivio di Stato of Florence, Italy
Chalmers, Alexander. The General Biographical Dictionary: Containing an Historical and Critical Account of the Lives and Writings of the Most Eminent Persons in Every Nation: Particulary the British and Irish, from the Earliest Accounts to the Present Time. Vol. 30. London: J. Nichols and Son, 1812-1817. Print. pages 329-332
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