Fædrunga
Bosworth & Toller Anglo-Saxon Old English Dictionary - fædrunga
According to the Old English Dictionary:
an;
- fædrunga
- m. A paternal relation, any parental relation; cognātus a patre, părens :-- Feóndes fædrunga the fiend's parent [i.e. Grendel's mother], Beo. Th. 4262; B. 2128. [O. H. Ger. fatarungo, m.