Princess Clarissa of Hesse born 1944; youngest child of Prince Christoph of Hesse and Princess Sophie of Greece and Denmark (b. 1944) Parents Prince Christoph of Hesse-Kassel Princess Sophie of Greece and Denmark Children Princess Johanna of Hesse-Kassel Siblings Princess Christina Margarethe of Hesse Prince Rainer of Hesse Princess Dorothea of Hesse Prince Karl of Hesse Princess Friederike of Hanover Prince Welf Ernst of Hanover Prince Georg of Hanover Partners Jean-Claude Derrien