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Dictionary of Medieval Names
from European Sources

Frothilde f. Old Saxon frōd, Old High German fruot 'wise' + Old High German hiltja 'battle'.

France
Latin
c823 Frothildis (nom) irminon-vol2 36, Palatiolum
Cite as: S.L. Uckelman. "Frothilde". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2018, no. 1. http://dmnes.org/2018/1/name/Frothilde.