Dictionary of Medieval Names
from European Sources

Wilher m. Old High German willo 'will' + Old High German heri 'host, army'.

France
Latin
693 Williharii (gen) DCEL-2 Add. V; 696 Williharii (gen) ibid. Add. VIII; c823 Wilharius (nom) irminon-vol2 105, Palatiolum; 1066 Guillerius (nom) StVdM-II 698
Germany
Latin
935 Willarius (nom) HambUrk-vol1 XXX, Willeri (dat) ibid. XXX; 963x1023 Wilheri (nom) TradCorb §226
Cite as: S.L. Uckelman. "Wilher". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Wilher.