Page "Catholic Monarchs" Paragraph 1

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 consanguinity by Sixtus IV.

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.

John Elliot and many other historians consider that the unification of Spain can essentially be traced back to the marriage of Ferdinand and Isabella, but newer historical opinions recognize that under their rule Spain was still a composite monarchy.

Castile and Aragon remained 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.