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Dictionary of Medieval Names
from European Sources

Agbert m. Proto-Germanic *agio 'blade' + Old High German beraht, Old Saxon berht 'bright' from Proto-Germanic *berhtaz.

France
Latin
825 Agebertus (nom) InsMacon V
Cite as: S.L. Uckelman. "Agbert". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 3. http://dmnes.org/2015/3/name/Agbert.