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'.

England
Latin
1222 Aelberni (gen) StPaulDom p. 10
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 2016, no. 4. http://dmnes.org/2016/4/name/Ailbern.