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 2017, no. 1. http://dmnes.org/2017/1/name/Walthad.