Enno III, Count of East Frisia

Enno III of Ostfriesland or Enno III of East Frisia was a Count of Ostfriesland from 1599 to 1625 from the Cirksena family. He was the elder son of Count Edzard II of Ostfriesland and his wife Princess Katarina of Sweden, eldest daughter of King Gustav I of Sweden.

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Source: Wikipedia