Dictionary of Medieval Names
from European Sources

Gerhar m. Old High German, Old Saxon gēr 'spear' + Old High German heri 'host, army'.

France
Latin
c823 Gerharius (nom) irminon-vol2 74, Ved
Germany
Latin
828 Gerahrii (gen) OrkGZ no. 29
Cite as: S.L. Uckelman. "Gerhar". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2020, no. 1. http://dmnes.org/2020/1/name/Gerhar.