Günther IX of Schwarzburg-Blankenburg - 19 Sep 1293 (b. 1250) Parents Günther VII, Count of Schwarzburg-Blankenburg Sophie Children Adelheid of Schwarzburg-Blankenburg Henry VI of Schwarzburg Günther XII of Schwarzburg-Blankenburg Albert of Schwarzburg Siblings unknown daughter von Schwarzburg-Blankenburg Heinrich V of Schwarzburg-Blankenburg Sophie von Schwarzburg Christiane von Schwarzburg Partners Helena of Saxe-Lauenburg Irmgard