<page_title> List of Castilian monarchs </page_title> <section_title> House of Trastámara </section_title> <table> <cell> John II <col_header> Monarch </col_header> </cell> <cell> 25 December 1406 <col_header> Began </col_header> </cell> <cell> 21 July 1454 <col_header> Ended </col_header> </cell> </table>
John II of Castile was King of Castile from 1406 to 1454.