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Dictionary of Medieval Names
from European Sources

Guimart m. Old Saxon, Old English wig, Old High German wīc 'war, battle' + Old High German, Old Saxon māri from Proto-Germanic *mērijaz 'famous'.

France
Old French
1296 Guimar paris1296 p. 29
Middle French
1421 Guimart favier 983; 1423 Guymart ibid. 344
Cite as: J. Uckelman, S.L. Uckelman. "Guimart". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 3. http://dmnes.org/2015/3/name/Guimart.