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Dictionary of Medieval Names
from European Sources

Aitard m. Old High German eit 'fire; brilliant' + Old Saxon hard, Old High German hart 'strong, hard'.

France
Latin
c823 Aitardus (nom) irminon-vol2 29, Palatiolum
Cite as: S.L. Uckelman. "Aitard". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 3. http://dmnes.org/2016/3/name/Aitard.