Nov 06, 2020 · Isabella I of Spain (April 22, 1451–November 26, 1504) was the queen of Castile and León in her own right and, through marriage, became the queen of Aragon. She married Ferdinand II of Aragon, bringing the kingdoms together into what became Spain under the rule of her grandson Charles V, the Holy Roman Emperor.

Life. Ferdinand was born in Coimbra, the second but eldest surviving son of Peter I and his wife, Constanza Manuel. On the death of Peter of Castile in 1369, Ferdinand, as great-grandson of Sancho IV by his grandmother Beatrice, laid claim to the vacant Castilian throne.The kings of Aragon and Navarre, and later John of Gaunt, Duke of Lancaster, who had married Peter of …