Who was the King of Spain in 1450?

In 1450 Spain did not exist as a political entity. Its territory was divided in some different Kingdoms. Kings in Spain in 1450: Kingdom of Aragón: Alfonso V (House of Trastámara)
Kingdom of Castilla: Juan II (House of Trastámara)
Kingdom of Navarra: Juan I (House of Evreux)
Nazarí Kingdom of Granada (Muslims): Muhammad IX