Anna of Oldenburg Regent of East Frisia from 1540 to 1561 (1501–1575) Parents Anna of Anhalt-Zerbst John V Children Johan II of East Frisia Christoffel of Frisia Edzard II, Count of East Frisia Hedwig von Ostfriesland Anna von Ostfriesland Elisabeth Gräfin von Ostfriesland Siblings George, Count of Oldenburg Christopher of Oldenburg Anthony I, Count of Oldenburg John VI, Count of Oldenburg Katharina von Plauen Partners Enno II, Count of East Frisia
