Countesses da Frísia Oriental Gräfinen von Ostfriesland Records #4 Holders Family filter On/Off Margarethe von Ostfriesland * 1560 Ana, countess of Ostfriesland * 1601 Ana, countess of Ostfriesland * 1562 Maria, countess of Ostfriesland * 1582 Corrections and Updates To suggest a correction or an update. Click Here