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Dictionary of Medieval Names
from European Sources

Frotlinde f. Old Frisian, Old Saxon frōd, Old High German fruot 'wise' + Proto-Germanic *linþaz 'gentle, sweet, mild'.

France
Latin
c823 Frotlindis (nom) irminon-vol2 66
Cite as: S.L. Uckelman. "Frotlinde". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 2. http://dmnes.org/2015/2/name/Frotlinde.