Walburgis, Countess of Rietberg Countess of Rietberg, 1565-1576 and 1584-1586 (1555–1586) Parents John II, Count of Rietberg Agnes Bentheim Children Sabina Catherine of East Frisia Agnes of Ostfriesland Siblings Armgard, Countess of Rietberg Partners Enno III, Count of East Frisia
