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Dictionary of Medieval Names
from European Sources

Ermengilde f. Old High German ermen, Old Saxon irmin 'great, strong' + Proto-Germanic *geldą 'reward, gift, money'.

France
Latin
c823 Ermengildis (nom) irminon-vol2 39
Cite as: S.L. Uckelman. "Ermengilde". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2021, no. 1. http://dmnes.org/2021/1/name/Ermengilde.