Count Jan Plater-Zyberk (1894-1959) (1894–1959) Children Countess Helena Plater-Zyberk Count Eugene Plater-Zyberk Countess Malgorzata Plater-Zyberk Count Hubert Plater-Zyberk Maria Alberta Plater-Zyberk Partners Countess Paulina Plater-Zyberk