The story
- Proto-Indo-European*dʰeh₁-
- Proto-Indo-European*dʰéh₁s
- Proto-Indo-European*dʰh₁sós
- Proto-Hellenic*tʰehós
- Ancient Greekθεός (theós)
- Proto-Indo-European*deh₃-
- Proto-Indo-European*dóh₃r̥
- Proto-Indo-European*déh₃rom
- Proto-Hellenic*dṓron
- Ancient Greekδῶρον (dôron)
- Ancient GreekΘεόδωρος (Theódōros)
- LatinTheodōru
- English todayTheodore
Learned borrowing from Latin Theodōrus, borrowed from Ancient Greek Θεόδωρος (Theódōros), from θεός (theós, “god”) + δῶρον (dôron, “gift”). The name was popularized in reference to the prominent St Theodore of Amasea. Unrelated to Theodoric.
Etymology from Wiktionary, CC BY-SA 4.0.