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

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

spouse:
*Lothar II Graf von Walbeck und Stade
born 0905 Walbeck, Sachsen, Prussia
died 3 December 0991

children:
*Heilika (Eila, Helikswintha) von Walbeck born about 0926 Walbeck, Saxony, Prussia
died 19 August 1015
*Lothar III Markgraf von Nordmark died 25 January 1003
Siegfried I von Walbeck

biographical and/or anecdotal:

notes or source:
LDS
ancestry.com
One source says father is Bruno von Arnsburg but he died 19 October 1009
which might make him almost 110 years old at the outside.