Thea

Short form of DOROTHEA or THEODORA.

DOROTHEA   female   German, Dutch, Danish, Norwegian, English, Late Greek
Feminine form of the Late Greek name Δωροθεος (Dorotheos), which meant "gift of God" from Greek δωρον (doron) "gift" and θεος (theos) "god". Dorothea was the name of two early saints, notably the 4th-century martyr Dorothea of Caesarea. It was also borne by the 14th-century Saint Dorothea of Montau, who was the patron saint of Prussia.
THEODORA   female   English, Greek, Ancient Greek
Feminine form of THEODORE. This name was common in the Byzantine Empire, being borne by several empresses including the influential wife of Justinian in the 6th century.
THEODORE   male   English
From the Greek name Θεοδωρος (Theodoros), which meant "gift of god" from Greek θεος (theos) "god" and δωρον (doron) "gift". This was the name of several saints, including Theodore of Amasea, a 4th-century Greek soldier; Theodore of Tarsus, a 7th-century archbishop of Canterbury; and Theodore the Studite, a 9th-century Byzantine monk. It was also borne by two popes.

This was a common name in classical Greece, and, due to both the saints who carried it and the favourable meaning, it came into general use in the Christian world, being especially popular among Eastern Christians. It was however rare in Britain before the 19th century. Famous bearers include three tsars of Russia (in the Russian form Fyodor) and American president Theodore Roosevelt (1858-1919).
FULL FORMS
DANISH: Dorete, Dorothea, Dorte, Dorthe
ENGLISH: Dorothea, Dorothy, Dortha, Dorthy
GERMAN: Dorothea
NORWEGIAN: Dorothea
SWEDISH: Dorotea, Teodora
EQUIVALENTS
ANCIENT GREEK: Theodora
BULGARIAN: Teodora, Todorka
CROATIAN: Dora, Dorotea, Doroteja, Tea
CZECH: Dorota
DANISH: Ditte, Dorit, Ea, Tea, Thea
DUTCH: Dora, Dorothea
ENGLISH: Dee, Dodie, Dollie, Dolly, Dora, Dorean, Doreen, Dorinda, Dorine, Dory, Dot, Dottie, Dotty, Thea
FINNISH: Dorotea, Tea, Teija, Tiia
FRENCH: Dorothée
GERMAN: Thea
GREEK: Dora, Theodora
HUNGARIAN: Dóra, Dorina, Dorka, Dorottya, Teodóra
ICELANDIC: Dóra, Theódóra
ITALIAN: Dorotea, Teodora
LATE GREEK: Dorothea
LITHUANIAN: Dorotėja, Urtė
LOW GERMAN: Dörthe
MACEDONIAN: Doroteja, Teodora, Todorka
NORWEGIAN: Ea, Tea, Thea
POLISH: Dorota, Dosia, Teodora
PORTUGUESE (BRAZILIAN): Dorotéia
PORTUGUESE: Doroteia, Teodora
ROMANIAN: Teodora
RUSSIAN: Fedora, Feodora
SERBIAN: Dora, Doroteja, Teodora
SLOVAK: Dorota
SLOVENE: Doroteja, Tea, Teja
SPANISH: Dora, Dorotea, Teodora
SWEDISH: Ea, Tea, Thea
DIMINUTIVES AND SHORT FORMS
ENGLISH: Doretta, Dorita
SPANISH: Dorita
MASCULINE FORMS
AMHARIC: Tewodros
ANCIENT GREEK: Theodoros, Theodorus
ARMENIAN: Toros
BULGARIAN: Teodor, Todor
CROATIAN: Teo, Teodor
CZECH: Teodor, Theodor
DANISH: Teodor, Theodor
DUTCH: Theo, Theodoor, Theodorus
ENGLISH: Ted, Teddy, Theo, Theodore
FINNISH: Teuvo
FRENCH: Théo, Théodore
GEORGIAN: Tedore
GERMAN: Theodor
GREEK: Dorotheos, Theodoros
HUNGARIAN: Teodor, Tivadar, Tódor
ITALIAN: Teo, Teodoro
LATE GREEK: Dorotheos
LATE ROMAN: Dorotheus
LATVIAN: Teodors
LIMBURGISH: Thei
MACEDONIAN: Teodor, Todor, Toše, Toshe
NORWEGIAN: Teodor, Theodor
POLISH: Teodor
PORTUGUESE: Téo, Teodoro
ROMANIAN: Teodor, Theodor, Tudor
RUSSIAN: Dorofei, Dorofey, Fedor, Fedya, Feodor, Fyodor
SERBIAN: Teodor, Todor
SLOVAK: Teodor
SLOVENE: Teodor
SPANISH: Teo, Teodoro
SWEDISH: Teodor, Theodor
UKRAINIAN: Fedir
OTHER FORMS
ENGLISH: Doria
FRENCH: Theirn
ROMANIAN: Dorin, Dorina