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Iambadoule is a Thracian goddess, epigraphically testified together with the Thracian god Zberthourdos (Sbelsurdos).
The deity is attested in an inscription written in Ancient Greek. A male deity, identified as Zberthourdos, is standing unclothed with a naked woman on a horse by his side.
Translation:
According to Dimitar Detschew, the form Ἰαμβαδούλῃ appears in the dative, pointing to a nominative Ἰαμβαδούλῃ (Iambadoule) or Ἰαμβαδούλῃς (Iambadoules).
French archeologist Paul Perdrizet indicated that the particle "-δουλέ" is also attested in personal name Δουλέ-ζελμις, a Thracian mercenary.
Detschew suggested that the deity's name is an epithet of a Thracian earth-mother goddess, translated as "the one that places the grain", with "iamba" meaning "wheat; wealthy, nutrition", and "doule" from Proto-Indo-European *dhe- 'to place', plus nomen agentis suffix -lo.
Bulgarian linguist Vladimir I. Georgiev proposed that Iambadoules means 'rainstorm, thunderstorm', from Dula 'the storm', with relation to Old Iranian ambhas 'water' and Greek θύελλα (thúella) 'storm'.
According to researcher Dragoslav Antonijević, Dragojlovic argued that the South Slavic character of the samovila (a fairy-like figure) is a continuation of this Thracian goddess.