Marmara Island is a Turkishisland in the Sea of Marmara. With an area of it is the largest island in the Sea of Marmara and is the second largest island of Turkey after Gökçeada. It is the center of Marmara district in Balıkesir Province. Transportation is possible from Istanbul by ship and ferry, and by motorboat from Tekirdağ and Erdek. Marmara island is full of historical treasures which increase its attractiveness. The town of "Mermer Plaj" / Marble Beach takes its name from the marbles for which the town is famous and which give the island and the sea their name.
Historical evidence of the first Hellenic presence on the island of Marmara came with the early colonization of Ionian Greeks in the 8th century BC. Stories and legends identify the island as a visiting place of Jason and the Argonauts and with the Hellenic expedition against Troy. In 493 BC it was burned by a Phœnician fleet fighting for Darius the Great. The island was ruled for the Achaemenid Empire under a Greek tyrant named Metrodorus. In 410 Alcibiades conquered it for Athens. During the Diocletianic Persecution the Emperor Diocletian ordered low-status Manichaeans to be executed while high-status Manichaeans were to be sent to work in the quarries of Proconnesus or the mines of Khirbat Faynan. During the reign of Constantine the Great in the 4th century notable aristocracy from Constantinople first settled on the island. By 569, many Byzantine aristocrats had built palaces on the island that they had accepted as their home. The greatest palace of this period was built by the Emperor Justinian I. With the Emperor came a large entourage of nobility, palace guards, tradesmen, and servants. Justinian also built a large convent on Marmara that is one of the earliest in recorded history. The Byzantine royal presence on the island was strongly felt through strong ties to the Patriarchate of Constantinople. During most of its history, the island was called "Proikonnesos", and "Prinkipo",. From the fall of the Byzantine Empire through the beginning of the Ottoman period the island was almost exclusively populated by Greek Orthodox Greeks . Beginning in the 17th century some Turks and a relatively large number of Jewish people lived on the island; most of these were Sephardi who had left Spain after the Inquisition. During World War I much of the population was forced off of the island onto the mainland. And, following the war, as a result of the 1923 Treaty of Lausanne and the population exchange between Greece and Turkey, all remaining Greeks native to the island of Marmara emigrated to Greece and other locations around the globe. The island's Greek Orthodox diaspora settled primarily in New Marmara, the island of Euboea, in Greece and in the northern Greek city ofThessaloniki. In addition, Canada, Australia and South America were popular destinations for Greek immigration of that time. Many of the former Jewish residents settled in the North American cities of New York, Los Angeles, San Francisco, Portland and the Seattle/Tacoma area. Many of the current residents of Marmara Adasi are descendants of Turks who fled Greek islands during the population transfers of the 1920s and Circassians originally from the Russian Caucasus.
On 4 January 1935 at 16:41:29 local time, an earthquake hit the Marmara Island and its neighboring islands Avşa and Paşalimanı, causing five deaths, 30 persons injured and several villages destroyed.
