Dictionary of Medieval Names
from European Sources

Frankbert m. Latin Francus, Old High German Franko, French Franc 'a Frank, a Frenchman' + Old High German beraht, Old Saxon berht 'bright' from Proto-Germanic *berhtaz.

France
Latin
c823 Francobertus (nom) irminon-vol2 18, Wan
Cite as: A. Brown, S.L. Uckelman. "Frankbert". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2023, no. 1. http://dmnes.org/2023/1/name/Frankbert.