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Dictionary of Medieval Names
from European Sources

Witgrim m. Old Saxon widu, wido, Old High German witu 'wood' or Old High German wīt, Old Saxon wīd 'wide' + Old High German, Old Saxon grim 'grim, fierce, bold'.

France
Latin
745 Uuidgrimo (abl) CartStBert 1
Cite as: S.L. Uckelman. "Witgrim". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2020, no. 1. http://dmnes.org/2020/1/name/Witgrim.