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Dictionary of Medieval Names
from European Sources

Dago m. A hypocoristic of any of various names beginning with Old Saxon, Old Dutch dag, Old High German tag 'day'.

France
Latin
657 Daginus (nom) DCEL-2 CCCXXVIII
Cite as: S.L. Uckelman. "Dago". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2018, no. 1. http://dmnes.org/2018/1/name/Dago.