Dictionary of Medieval Names
from European Sources

Belladonna f. Latin bella 'beautiful, charming, pleasant' + Italian donna 'lady' from Latin domina 'lady'.

Italy
Latin
1265x1339 Beladona (nom) BBC-Berg 1113, Beldona (nom) ibid. 544, Belladona (nom) ibid. 187
Cite as: A. Brown, S.L. Uckelman. "Belladonna". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2020, no. 1. http://dmnes.org/2020/1/name/Belladonna.