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Dictionary of Medieval Names
from European Sources

Walthad m. Old Saxon wald, Old High German walt 'power, authority' + Old High German hadu 'battle'.

France
Latin
c823 Waltadus (nom) irminon-vol2 12, CE
Cite as: S.L. Uckelman. "Walthad". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2018, no. 1. http://dmnes.org/2018/1/name/Walthad.