The Catholic Monarchs is the joint title used in history for Queen Isabella I of Castile and King Ferdinand II of Aragon. They were both from the House of Trastámara and were second cousins, being both descended from John I of Castile; on marriage they were given a papal dispensation to deal with …
Ferdinand and Isabella with their subjects
Marriage portrait of Isabella and Ferdinand, who married in 1469
Ferdinand on the left with Isabella on the right. The inscription above identifies them as "Lord Ferdinand and Lady Isabella, Monarchs of Castile and of Aragon".
Virgin of the Catholic Monarchs, (painted ca. 1491-1493). The Virgin Mary (center), with St Thomas Aquinas symbolically holding the Catholic Church and St Domingo de Guzmán, Spanish founder of the Dominican Order, with a book and a palm frond. Ferdinand is with the prince of Asturias and the inquisitor; Isabella with their daughter, Isabel de Aragón.