Dictionary of Medieval Names
from European Sources

Gundberg f. Old High German gund 'war, battle' + Old Norse, Old High German berg 'mountain, hill' or Old High German burg 'castle, city, stronghold'.

The name of a 6th C queen of the Lombards.

France
Latin
c823 Guntberga (nom) irminon-vol2 34, Wan
Cite as: S.L. Uckelman. "Gundberg". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2020, no. 1. http://dmnes.org/2020/1/name/Gundberg.