Dictionary of Medieval Names
from European Sources

Dadmar m. Old Saxon dād, Old High German tāt, Gothic 𐌳𐌴𐌸𐍃 'deed, act' + Old English mære, Old High German, Old Saxon māri from Proto-Germanic *mērijaz 'famous'.

Hungary
Latin
1351 Thatamerii (gen) CDH-IX-II III
The Netherlands
Latin
799 Thathumeri (gen) OrkGZ no. 18
Cite as: S.L. Uckelman. "Dadmar". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2020, no. 1. http://dmnes.org/2020/1/name/Dadmar.