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Dictionary of Medieval Names
from European Sources

Airard m. Old High German heri 'host, army' + Old Saxon hard, Old High German hart 'strong, hard'.

France
Latin
c823 Airhardus (nom) irminon-vol2 42; 1047 Airardi (gen) CartNDSaintes I; 1135 Airardi (gen) clairvaux-12thc 7; c1140 Airardi (gen) CartNDdOurscamp LXXXIII; 1147 Airardo (abl) clairvaux-12thc 14; 1171 Airardus (nom) ibid. 139; 1173 Ayrardo (abl) ibid. 154
Italy
Latin
1198 Arardi (gen) ChStBo1 III
Cite as: S.L. Uckelman. "Airard". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2021, no. 1. http://dmnes.org/2021/1/name/Airard.