Dictionary of Medieval Names
from European Sources

Ratbert m. Old Saxon rād, Old High German rāt 'counsel, advice' + Old High German beraht, Old Saxon berht 'bright' from Proto-Germanic *berhtaz.

France
Latin
c823 Ratbertus (nom) irminon-vol2 34, Palatiolum
Germany
Latin
963x1023 Ratbert (nom) TradCorb §228
Cite as: S.L. Uckelman. "Ratbert". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Ratbert.