Etymology tree Proto-Indo-European *dʰeh₁- Proto-Indo-European *-s Proto-Indo-European *dʰéh₁s Proto-Hellenic *tʰehós Ancient Greek θεός (theós) Proto-Indo-European *deh₃- Proto-Indo-European *-r̥ Proto-Indo-European *dóh₃r̥ Proto-Indo-European *-os Proto-Indo-European *déh₃rom Proto-Hellenic *dṓron Ancient Greek δῶρον (dôron) Ancient Greek Θεόδωρος (Theódōros)lbor. Old Church Slavonic Ѳеодоръ (Θeodorŭ)bor. Russian Фёдор (Fjódor)translit. English Fyodor Transliteration of Russian Фёдор (Fjódor).

Etymology: Wiktionary (CC-BY-SA)