There are multiple origins and meanings for the name Thea:
1. Ancient Greek name-giving component (Θεά) meaning - "goddess", the female equivalent of the Greek name Theos, or comes from the Greek word (θέα) (emphasis on έ) meaning - "vie, sight".
2. Diminutive form of the given name Dorothea, or of Alithea, or of Althea.
Thea - governess of Hellenistic state Seleucid, the queen of Syria, the daughter of the Egyptian king Ptolemy VI Philadelphus and the queen Cleopatra II.