Dictionary of Medieval Names
from European Sources

Bertbert m. A duplication of Old High German beraht, Old Saxon berht 'bright' from Proto-Germanic *berhtaz.

France
Latin
745 Berdberti (gen) CartStBert 1
Cite as: S.L. Uckelman. "Bertbert". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2020, no. 1. http://dmnes.org/2020/1/name/Bertbert.