Dictionary of Medieval Names
from European Sources

Gerhelm m. Old High German, Old Saxon gēr 'spear' + Old High German, Old Saxon helm 'helmet'.

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