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Dictionary of Medieval Names
from European Sources

Ermenbert m. Old High German ermen, Old Saxon irmin 'great, strong' + Old High German beraht, Old Saxon berht 'bright' from Proto-Germanic *berhtaz.

Cf. also Imbert.

France
Latin
699 Erimbertus (nom) DCEL-2 Add. X, Ermbertus (nom) ibid. Add. X; c823 Ermenbertus (nom) irminon-vol2 38, Palatiolum; 1038 Ermembertus (nom) StVdM-II 719; a1116 Erembertus (nom) CartStPC XX
Cite as: S.L. Uckelman. "Ermenbert". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 3. http://dmnes.org/2015/3/name/Ermenbert.