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Dictionary of Medieval Names
from European Sources

Fritheburg f. Old High German fridu, Old Saxon frithu 'peace' + Old High German burg 'castle, city, stronghold'.

Germany
Latin
822x875 Frithuburg (abl) TradCorb §134; 963x1023 Frithuburgh (nom) ibid. §226
Cite as: S.L. Uckelman. "Fritheburg". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 2. http://dmnes.org/2015/2/name/Fritheburg.