Dictionary of Medieval Names
from European Sources

Jonilde f. Old French Jon, a short form of Jonas or Jonathan + Old High German hiltja 'battle'.

This is a rare case of a name constructed from an imported prototheme and a native deuterotheme.

France
Latin
c823 Jonildis (nom) irminon-vol2 6, Wan
Cite as: S.L. Uckelman. "Jonilde". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Jonilde.