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Dictionary of Medieval Names
from European Sources

Ainard m. Old French agin lengthened from Proto-Germanic *agio 'blade' + Old Saxon hard, Old High German hart 'strong, hard'.

France
Latin
1029x1033 Ainardus (nom) CartStPC XII
Cite as: S.L. Uckelman. "Ainard". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 2. http://dmnes.org/2015/2/name/Ainard.