Anne of Ostfriesland German noblewoman (1562-1621) (1562–1621) Parents Catherine Vasa of Sweden Edzard II, Count of East Frisia Children Siblings Christoph Gretsil Enno III, Count of East Frisia John III of Rietberg Maria of Ostfriesland Partners Louis VI of the Palatinate Ernest Frederick, Margrave of Baden-Durlach Julius Henry, Duke of Saxe-Lauenburg