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Dictionary of Medieval Names
from European Sources

Gerbern m. Old High German, Old Saxon gēr 'spear' + Old High German, Old Saxon bero 'bear'.

France
Latin
c1050 Girberno (abl) StVdM-II 696
Germany
Latin
822x875 Gerberno (abl) TradCorb §139
Cite as: S.L. Uckelman. "Gerbern". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2019, no. 1. http://dmnes.org/2019/1/name/Gerbern.