In the War of the Castilian Succession, he supported the Catholic Monarchs against his presumed daughter Juana.

This was one of the events that eventually led to the War of the Castilian Succession a few years later.

During the war of the Castilian Succession, he participated in the recapture of the town of Alegrete from the Castilians.

Alonso de Cárdenas served the Catholic Monarchs during the War of the Castilian Succession.

War of the Castilian Succession (1475-79)

This led him to clash with the Mendoza family, a battle he lost in the War of the Castilian Succession that followed (1475-1479).

Fernando took part in the War of the Castilian Succession.

September 4 - Treaty of Alcáçovas ends War of Castilian Succession.

He was also famous for his battles against the Portuguese in the War of the Castilian Succession.

War of the Castilian Succession (1475-1479)