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Dictionary of Medieval Names
from European Sources

Luther m. Old High German liut 'people' + Old High German heri 'host, army' or Ancient Greek έλεύθερος 'free'.

France
Latin
c823 Leutharus (nom) irminon-vol2 7, Gaugiacum
Germany
Latin
822x875 Liudharius (nom) TradCorb §149, Liutharius (nom) ibid. §56, Luithario (abl) ibid. §136; 963x1023 Leutheri (nom) ibid. §226; 1149 Luitherus (nom) mairhofer XXXIII
Cite as: S.L. Uckelman. "Luther". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 2. http://dmnes.org/2015/2/name/Luther.