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Dictionary of Medieval Names
from European Sources

Hagan m. Old French hagan lengthened from Old Saxon hago, Old Icelandic hagi 'pasture, yard, enclosed land'.

France
Latin
1138x1148 Agano (nom) clairvaux-12thc 21, Aganonis (gen) ibid. 21; 1147 Agano (nom) ibid. 14, Hagano (nom) ibid. 14
Cite as: S.L. Uckelman. "Hagan". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 3. http://dmnes.org/2015/3/name/Hagan.