Dictionary of Medieval Names
from European Sources

Tedesca f. Proto-Germanic *þiudiskaz 'of the people, popular, vernacular'.

Forms with o for the initial vowel are indicative of Venetian influence.

Italy
Latin
1265x1339 Totescha (nom) BBC-Berg 23
Cite as: S.L. Uckelman. "Tedesca". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Tedesca.