Elisabeth of Cleves, Countess of Schwarzburg-Blankenburg German noble (1420–1488) Parents Marie of Burgundy Adolph I Children Günther XXII, Count of Schwarzburg-Blankenburg Günther XXI, Count of Schwarzburg-Sondershausen Günther XX, Count of Schwarzburg-Arnstadt Hendrik XXVII van Schwarzburg Siblings Helen of Cleves John I, Duke of Cleves Maria of Cleves Catherine of Cleves Agnes of Cleves Adolph of Cleves, Lord of Ravenstein Margaret of Cleves, Duchess of Bavaria-Munich Anna von der Mark-Kleve Engelbert von der Mark-Kleve Partners Henry XXI, Count of Schwarzburg-Blankenburg