Catherine of Cleves was Duchess of Guelders by marriage to Arnold, Duke of Guelders. She acted as regent of Guelders during the absence of her spouse in 1450. The Hours of Catherine of Cleves was commissioned for her.
Catherine of Cleves kneels before the Virgin and Child. Her arms, with those of her husband, Duke Arnold of Guelders, are in the bottom center; the arms of her ancestors are in each corner.