July 26 » Wars of the Roses: The Battle of Edgecote Moor, pitting the forces of Richard Neville, 16th Earl of Warwick against those of Edward IV of England, takes place.
August 1 » Louis XI of France founds the chivalric order called the Order of Saint Michael in Amboise.
October 19 » Ferdinand II of Aragon marries Isabella I of Castile, a marriage that paves the way to the unification of Aragon and Castile into a single country, Spain.
February 15 » 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.
March 4 » Explorer Christopher Columbus arrives back in Lisbon, Portugal, aboard his ship Niña from his voyage to what are now The Bahamas and other islands in the Caribbean.
March 15 » Christopher Columbus returns to Spain after his first trip to the Americas.
May 4 » Pope Alexander VI divides the New World between Spain and Portugal along the Line of Demarcation.
July 12 » Hartmann Schedel's Nuremberg Chronicle, one of the best-documented early printed books, is published.
November 3 » Christopher Columbus first sights the island of Dominica in the Caribbean Sea.
When copying data from this family tree, please include a reference to the origin: R. de Roo, "Family name De Roo and variants", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-de-roo-en-vairianten/I12849.php : accessed August 9, 2025), "Ghijsselbrecht de ROO (1445-1493)".
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