Background
Catherine was born on 5 October 1422 in Illescas, Toledo.
Catherine was born on 5 October 1422 in Illescas, Toledo.
The Infanta was formally recognised as successor to the throne of the kingdom and sworn in as Princess of Asturias on 1 January 1423 by the Cortes of Toledo. However, the Princess of Asturias did not live long enough to succeed her father as Queen of Castile. She died in Madrigal de las Altas Torres on 17 September 1424.
Her younger sister, Infanta Eleanor, replaced her as heiress and Princess of Asturias.