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Dictionary of Medieval Names
from European Sources

Liuthard m. Old High German liut 'people' + Old Saxon hard, Old High German hart 'strong, hard'.

France
Latin
c823 Leutardus (nom) irminon-vol2 8, Gaugiacum, Liutardus (nom) ibid. 6, Gaugiacum; 1135 Letardus (nom) clairvaux-12thc 7; 1147 Letardo (abl) ibid. 14; 1180 Letardo (abl) RotScaNor p. 19
Germany
Latin
822x875 Liuthardus (nom) TradCorb §85, Luthardus (nom) ibid. §55; 1108 Litardo (abl) quix-vol1 85
Cite as: S.L. Uckelman. "Liuthard". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 2. http://dmnes.org/2015/2/name/Liuthard.