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Dictionary of Medieval Names
from European Sources

Hildemar m. Old High German hiltja 'battle' + Old High German, Old Saxon māri from Proto-Germanic *mērijaz 'famous'.

England
Latin
1189 Hildemer (nom) GASurv p. 172
France
Latin
c823 Hildemarus (nom) irminon-vol2 13, CE; c1170 Heldemari (gen) CartNDdOurscamp LXXXIV
Cite as: S.L. Uckelman. "Hildemar". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 1. http://dmnes.org/2016/1/name/Hildemar.