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Dictionary of Medieval Names
from European Sources

Ratberga f. Old Saxon rād, Old High German rāt 'counsel, advice' + Old High German berg 'mountain, hill'.

France
Latin
c823 Ratberga (nom) irminon-vol2 47, CE
Cite as: S.L. Uckelman. "Ratberga". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2019, no. 1. http://dmnes.org/2019/1/name/Ratberga.