Dictionary of Medieval Names
from European Sources

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

Austria
Latin
1237 Hademarus (nom) hennes-vol1 96
Germany
Latin
948 Hadumari (gen) HambUrk-vol1 XXXV; 1222 Hadamarus (nom) hennes-vol1 62
Cite as: S.L. Uckelman. "Hadumar". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Hadumar.