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Dictionary of Medieval Names
from European Sources

Ailbern m. Proto-Germanic *agio 'blade' lengthened to Old French agil + Old High German, Old Saxon bero 'bear'.

Germany
Latin
822x875 Ailbern (nom) TradCorb §108, Ailberno (abl) ibid. §86, Ailbernus (nom) ibid. §99
Cite as: S.L. Uckelman. "Ailbern". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 2. http://dmnes.org/2015/2/name/Ailbern.