Dictionary of Medieval Names
from European Sources

Theodore m. Greek Θεός 'God' + Greek δώρον 'gift'.

The name of a number of early saints and martyrs, an 8th C Byzantine saint, an 8th C Coptic pope, a 9th C Byzantine saint, a 9th C pope, a 13th C Russian prince and saint, two 13th Byzantine emperors, and a 16th C tsar of Russia.

Not to be confused with Theodoric.

There exists a Slavic calque, Bogdan.

England
Latin
1222 Theodorus (nom) StPaulDom p. 61
France
Latin
814 Teodorus (nom) StVdM-II F2
Middle French
1563 Théodore RegPCC-1 p. 21
Italy
Latin
1179 Theodorus (nom) CartHaut 25
Italian
1513x1521 Theodoro LeoX p. 11
Ukraine
Latin
1469 Fedor (nom) AGZ-18 17
Cite as: J. Uckelman, S.L. Uckelman. "Theodore". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Theodore.