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Dictionary of Medieval Names
from European Sources

Blithewine m. Old English blīþe 'happy, joyful, glad' + Old English wine 'friend'.

England
Latin
1222 Blithewini (gen) StPaulDom p. 26
Cite as: S.L. Uckelman. "Blithewine". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Blithewine.