Dictionary of Medieval Names
from European Sources

Gerberta m. Old High German, Old Saxon gēr 'spear' + Old High German beraht, Old Saxon berht 'bright' from Proto-Germanic *berhtaz.

Cf. Gerbert.

France
Latin
c823 Geirberta (nom) irminon-vol2 31, Palatiolum
Cite as: S.L. Uckelman. "Gerberta". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Gerberta.