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Dictionary of Medieval Names
from European Sources

Hainfroy m. Old German hagin + Old High German fridu, Old Saxon frithu 'peace'.

France
Middle French
1388 Hainfroy thierry
Cite as: J. Uckelman, S.L. Uckelman. "Hainfroy". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 2. http://dmnes.org/2015/2/name/Hainfroy.