Pia Prinzessin zu Sayn-Wittgenstein-Berleburg (1942-2025) (1942–2025) Parents Gustav Albrecht, 5th Prince of Sayn-Wittgenstein-Berleburg Princess Margareta, Princess of Sayn-Wittgenstein-Berleburg Children Siblings Princess Tatiana of Sayn-Wittgenstein-Berleburg Richard, 6th Prince of Sayn-Wittgenstein-Berleburg Madeleine Prinzessin zu Sayn-Wittgenstein-Berleburg Prince Robin of Sayn-Wittgenstein-Berleburg