In this TL the the King of Portugal Alfonso V successfully marries Isabella I of Castile. Because of this marriage the kingdoms of Portugal and Castile are united under the son of Alfonso V, John II, and the daughter of Enrique of Castille, Juana. These two grant Christopher Columbus his expeditions a little later than in OTL. The fact that Christopher Columbus travels a little later does not affect much in history. The new union between Castile and Portugal creates the Country of Grande Portugal. Also in this TL Arthur, Prince of Wales survives and does not die. He marries a different Catherine of Aragon the daughter of Ferdinand II of Aragon and a noble woman Germaine of Foix. She was the niece of Louis XII of France. Prince Henry VIII is married to Anne Boleyn and only fathers Elizabeth