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Dictionary of Medieval Names
from European Sources

Madalbert m. Old High German, Old Saxon mahal 'council, meeting' + Old High German beraht, Old Saxon berht 'bright' from Proto-Germanic *berhtaz.

France
Latin
p800 Madalbertus (nom) InsMacon II; c823 Madalbertus (nom) irminon-vol2 55
Cite as: S.L. Uckelman. "Madalbert". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 2. http://dmnes.org/2015/2/name/Madalbert.