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Dictionary of Medieval Names
from European Sources

Madwen f. Old Breton, Middle Welsh mat 'good, fortunate' + Welsh gwen 'fair, white; blessed'.

England
Early Modern English
1554 Madwen BarnstapleBap p. 8
Cite as: S.L. Uckelman. "Madwen". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Madwen.