Dictionary of Medieval Names
from European Sources

Ermentilde f. Old High German ermen, Old Saxon irmin 'great, strong' + a meaningless element, influenced by Old High German hiltja 'battle'.

The name is a Gallo-Frankish creation.

France
Latin
c823 Ermentildis (nom) irminon-vol2 33, Gaugiacum
Cite as: S.L. Uckelman. "Ermentilde". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2019, no. 1. http://dmnes.org/2019/1/name/Ermentilde.