Isabella I

noun

1. the Catholic, 1451–1504, wife of Ferdinand V: queen of Castile 1474–1504; joint ruler of Aragon 1479–1504.

Isabella I

noun

1. Isabella I14511504FSpanishPOLITICS: hereditary ruler known as Isabella the Catholic. 1451–1504, queen of Castile (1474–1504) and, with her husband, Ferdinand V, joint ruler of Castile and Aragon (1479–1504)