Prince Karl Friedrich I, Prince of Hohenzollern-Sigmaringen Prince of Hohenzollern-Sigmaringen (1724–1785) Parents Maria Franziska of Öttingen-Spielberg Joseph Friedrich Ernst I of Hohenzollern-Sigmaringen Children Johanna Franziska of Hohenzollern-Sigmaringen Maria Crescentia von Hohenzollern-Sigmaringen Anton Aloys, Prince of Hohenzollern-Sigmaringen Siblings Marie-Jeanne de Hohenzollern-Sigmaringen Partners Countess Johanna of Hohenzollern-s'Heerenberg