Master of the Retablo of the Reyes Catolicos
The name given to this artist refers to his work on creating retablos for the Catholic Monarchs ( Reyes Católicos ) Isabella I of Castile and Ferdinand II of Aragon . 
<triplet> Catholic Monarchs <subj> Isabella I of Castile <obj> has part <subj> Ferdinand II of Aragon <obj> has part <triplet> Isabella I of Castile <subj> Catholic Monarchs <obj> part of <subj> Ferdinand II of Aragon <obj> spouse <triplet> Ferdinand II of Aragon <subj> Catholic Monarchs <obj> part of <subj> Isabella I of Castile <obj> spouse