John III, Duke of Cleves First ruler of the United Duchies of Jülich-Cleves-Berg (1490–1539) Parents Mathilde of Hesse John II, Duke of Cleves Children Sibylle of Cleves Anne of Cleves William, Duke of Jülich-Cleves-Berg Amalia of Cleves Siblings Anna von Kleve Adolf von der Mark-Kleve Helene von Kleve Partners Maria of Jülich-Berg
