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Dictionary of Medieval Names
from European Sources

Allegrezza f. Italian allegrezza, from Latin *alacritia 'happiness, joyfulness, mirth; briskness, activity'.

Italy
Latin
1527 Allegrezza (nom) Rome1527 p. 87
Cite as: S.L. Uckelman. "Allegrezza". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 2. http://dmnes.org/2015/2/name/Allegrezza.