Prince Johannes of Windisch-Graetz (born 1971) (b. 1971) Parents Maria Magdalena Gamper Prince Otto of Windisch-Graetz Children Princess Marie of Windisch-Graetz Princess Emilia of Windisch-Graetz Prince Otto of Windisch-Graetz Siblings Princess Sophie of Windisch-Graetz Dominique Prinzessin zu Windisch-Grätz Prince Philipp of Windisch-Graetz Princess Desiree of Windisch-Graetz Princess Henriette of Windisch-Graetz Prince Ernst of Windisch-Graetz Partners Judith Wurm