Princess Juliane Luise of East Frisia Duchess consort of Schleswig-Holstein-Sonderburg-Plön (1698–1740) Parents Christian Everhard, Prince of East Frisia Princess Eberhadine Sophie of Oettingen-Oettingen Children unknown von Schleswig-Holstein-Sonderburg-Plön Siblings George Albert, Prince of East Frisia Princess Christine Sophie of East Frisia Countess Marie Charlotte of East Frisia Enno August von Ostfriesland Marie Charlotte, Gräfin von Ostfriesland Partners Joachim Frederick, Duke of Schleswig-Holstein-Sonderburg-Plön