Dictionary of Medieval Names
from European Sources

Germar m. Old High German, Old Saxon gēr 'spear' + Old High German, Old Saxon māri from Proto-Germanic *mērijaz 'famous'.

France
Latin
c823 Germarus (nom) irminon-vol2 4, CE
Cite as: S.L. Uckelman. "Germar". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Germar.