Pedro IV of Castille (Chaos)

From Alternative History

Pedro IV of the Castillian Burgundy dynasty was born in 1427 as the son of Pedro III and his wife. After the early death of his father, he became king of Castille and Portugal at the age of only eight years.

When the infamous Sacco di Roma happened in 1466, many people from Castille-Portugal went there to fight for the pope; although Pedro also sent some troops, he didn't declare war on the Rum-Seljuks, which many sides criticized. The king only succeeded in making the eastern parts of the Papal States the new Duchy/Protectorate of the Marches, theoretically still under the pope, de facto under the duke of Alba (Castille).

1492 (SCNR), a Castillian expedition (well, it was funded by the king, and some of his people are on the ship, but since the Portuguese insisted, the captain and all the sailors were Portuguese - Castillians weren't allowed to build caravels) crossed the Atlantic, made landfall in Florida, claimed it for Castille-Portugal. It is safe to say, however, that the old king didn't participate much on this decision.

In 1497, he died without heirs, and his empire fell to king Edward V of England, forming the Quadruple Monarchy.