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Dictionary of Medieval Names
from European Sources

Lefsy m. Old English lēof 'dear, loved' + Old English sige 'victory'.

England
Latin
1222 lefsi (gen) StPaulDom p. 57
Cite as: S.L. Uckelman. "Lefsy". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2018, no. 1. http://dmnes.org/2018/1/name/Lefsy.