Births on April 11

George I, Duke of Pomerania (d. 1531)

George I of Pomerania (German: Herzog Georg I. von Pommern; 11 April 1493 – 10 May 1531) was a Duke of Pomerania from the House of Griffins.

15 Feb

Columbus's letter on the first voyage
While on board the Niña, Christopher Columbus writes an open letter (widely distributed upon his return to Portugal) describing his discoveries and the unexpected items he came across in the New World.
4 Mar

Voyages of Christopher Columbus
Explorer Christopher Columbus arrives back in Lisbon, Portugal, aboard his ship Niña from his voyage to what is now The Bahamas and other islands in the Caribbean.
4 May

New World
Pope Alexander VI divides the New World between Spain and Portugal along the Line of Demarcation.
3 Nov

Dominica
Christopher Columbus first sights the island of Dominica in the Caribbean Sea.
18 Nov

Puerto Rico
Christopher Columbus first sights the island now known as Puerto Rico.