Dictionary of Medieval Names
from European Sources

Walrich m. Old Frankish, Old German walh 'foreigner, stranger; slave' from Proto-Germanic *walhaz, from a Celtic tribal name + Old High German rih 'ruler'.

France
Latin
1179 Walericus (nom) clairvaux-12thc 178
Cite as: S.L. Uckelman. "Walrich". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Walrich.