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Dictionary of Medieval Names
from European Sources

Agenilde f. Old French agin lengthened from Proto-Germanic *agio 'blade' + Old High German hiltja 'battle'.

England
Latin
1189 Agenild (nom) GASurv p. 214, Agnild (nom) ibid. p. 166
France
Latin
c823 Agenildis (nom) irminon-vol2 51
Cite as: S.L. Uckelman. "Agenilde". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 3. http://dmnes.org/2016/3/name/Agenilde.