Theda Ukena East Frisian countess by marriage and later regent of East Frisia (1432-1494) (1432–1494) Parents Uko Fockena Heba Attena von Dornum Hebe Children Enno I Edzard I, Count of East Frisia Hebe Gräfin von Ostfriesland Partners Ulrich I, Count of East Frisia
