The ["Catholic "Kings"] (Spanish: los Reyes Católicos) is the collective 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; they were given a papal dispensation to deal with consanguinity by Sixtus IV. The title of "Catholic King and Queen" was bestowed on them by the Pope Alexander VI in 1496, for defending Catholic dogmas within their realms. They married on October 19, 1469, in the city of Valladolid; Isabella was eighteen years old and Ferdinand a year younger. Their marriage united both crowns under the same family. Although many historians, like John Elliot argue that the unification of Spain can essentially be traced back to the marriage of Ferdinand and Isabella, newer historical opinions recognize that under their rule Spain was still a composite monarchy. Castile and Aragon would remain largely separate entities for decades to come. The court of Ferdinand and Isabella was constantly on the move, in order to bolster local support for the crown from local feudal lords.
"Catholic monarchs" or "kings" can of course be used in a generic sense (e.g., "the Pope had authority over Catholic monarchs..."); the particular or generic use can be distinguished from the context.
The ["Catholic "Kings"] (Spanish: los Reyes Católicos) is the collective 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; they were given a papal dispensation to deal with consanguinity by Sixtus IV. The title of "Catholic King and Queen" was bestowed on them by the Pope Alexander VI in 1496, for defending Catholic dogmas within their realms. They married on October 19, 1469, in the city of Valladolid; Isabella was eighteen years old and Ferdinand a year younger. Their marriage united both crowns under the same family. Although many historians, like John Elliot argue that the unification of Spain can essentially be traced back to the marriage of Ferdinand and Isabella, newer historical opinions recognize that under their rule Spain was still a composite monarchy. Castile and Aragon would remain largely separate entities for decades to come. The court of Ferdinand and Isabella was constantly on the move, in order to bolster local support for the crown from local feudal lords.
"Catholic monarchs" or "kings" can of course be used in a generic sense (e.g., "the Pope had authority over Catholic monarchs..."); the particular or generic use can be distinguished from the context.