Sidussa ( or Σιδούσση) was a small town of

Ionia Ionia ( ) was an ancient region encompassing the central part of the western coast of Anatolia. It consisted of the northernmost territories of the Ionian League of Greek settlements. Never a unified state, it was named after the Ionians who ...

, belonging to the territory of Erythrae, noted by

Thucydides Thucydides ( ; ; BC) was an Classical Athens, Athenian historian and general. His ''History of the Peloponnesian War'' recounts Peloponnesian War, the fifth-century BC war between Sparta and Athens until the year 411 BC. Thucydides has been d ...

as a strong place, like Pteleum.

Pliny the Elder Gaius Plinius Secundus (AD 23/24 79), known in English as Pliny the Elder ( ), was a Roman Empire, Roman author, Natural history, naturalist, and naval and army commander of the early Roman Empire, and a friend of the Roman emperor, emperor Vesp ...

describes it as an island off the coast of Erythrae. It is probable that the place also bore the name of Sidus (Σιδοῦς), as

Stephanus of Byzantium Stephanus or Stephen of Byzantium (; , ''Stéphanos Byzántios''; centuryAD) was a Byzantine grammarian and the author of an important geographical dictionary entitled ''Ethnica'' (). Only meagre fragments of the dictionary survive, but the epit ...

mentions a town of this name in the territory of Erythrae. Sidussa was a member of the

Delian League The Delian League was a confederacy of Polis, Greek city-states, numbering between 150 and 330, founded in 478 BC under the leadership (hegemony) of Classical Athens, Athens, whose purpose was to continue fighting the Achaemenid Empire, Persian ...

since it is mentioned in tribute records to

Athens Athens ( ) is the Capital city, capital and List of cities and towns in Greece, largest city of Greece. A significant coastal urban area in the Mediterranean, Athens is also the capital of the Attica (region), Attica region and is the southe ...

at least between the years 450/49 and 430/29 BCE. Thucydides places it in the territory of Erythrae and says that, like Pteleum it was a fortified place that was used by the Athenian army under the command of Leon and Diomedon to attack positions on

Chios Chios (; , traditionally known as Scio in English) is the fifth largest Greece, Greek list of islands of Greece, island, situated in the northern Aegean Sea, and the List of islands in the Mediterranean#By area, tenth largest island in the Medi ...

in the year 412 BCE. Sidussa's location is tentatively accepted as at Büyük Ada,

İzmir Province İzmir Province () is a province and metropolitan municipality of Turkey in western Anatolia, situated along the Aegean coast. Its capital is the city of İzmir, which is in itself composed of the province's central 11 districts out of 30 in to ...

Turkey Turkey, officially the Republic of Türkiye, is a country mainly located in Anatolia in West Asia, with a relatively small part called East Thrace in Southeast Europe. It borders the Black Sea to the north; Georgia (country), Georgia, Armen ...

References

Populated places in ancient Ionia Former populated places in Turkey Members of the Delian League History of İzmir Province {{ancientIonia-geo-stub