*Ekbert "One-Eyed" Graf von Ambergau
born about 0930 Ambergau, Saxony
died 5 April 0994

father:
*Wichmann Count Of Engern
born before 0900
died 21 February 0944 killed in battle
(end of information)

mother:
*Frederuna von Ringleheim
born between 0880/0900 Ringelheim, Goslar, Hannover, Prussia

siblings:
*Mathilde von Engern-Arnsburg
born 0907?
died 3 December 0990

spouse:
*?Frederuna wife of Ekbert "One-Eyed"Von Ambergau
born Abt 0930 Of, Ambergau, Saxony
married abt 0959 Of Derlingo, Westfriesland
(end of information)

children:
*Bruno Count of Brunswick
born 0960 Of, Derlingo, Westfriesland
died 1016

biographical and/or anecdotal:

notes or source:
LDS & ancestry.com
Looks like Frederuna the mother and Frederuna the wife could be same person.