Dictionary of Medieval Names
from European Sources

Frotgar m. Old Saxon frōd, Old High German fruot 'wise' + Old High German, Old Saxon gēr 'spear'.

France
Latin
c823 Frotgarius (nom) irminon-vol2 24, Gaugiacum
Cite as: S.L. Uckelman. "Frotgar". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Frotgar.