Günther XVIII, Count of Schwarzburg German count (b. 1350) Parents Günther XII, Count of Schwarzburg Helene von Holstein-Schauenburg Henry VIII, Count of Schwarzburg-Leutenberg Children Siblings Henry XI, Count of Schwarzburg-Leutenberg Mechtild of Schwarzburg Helene, Gräfin von Schwarzburg Gerhard von Schwarzburg Sophie von Schwarzburg Partners Anna von Falkenstein