Dictionary of Medieval Names
from European Sources

Fredebert m. Old High German fridu, Old Saxon frithu 'peace' + Old High German beraht, Old Saxon berht 'bright' from Proto-Germanic *berhtaz.

France
Latin
c823 Fredebertus (nom) irminon-vol2 52
Cite as: S.L. Uckelman. "Fredebert". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Fredebert.