Marmara Island (Turkish: Marmara Adası; Greek: Προκόννησος Proconnesus) is a Turkish island in the Sea of Marmara. With an area of 117.8 km2 (45.5 sq mi) it is the largest island in the Sea of Marmara and is the second largest island of Turkey after Gökçeada (older name in Turkish: İmroz; Greek: Ίμβρος Imvros). 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. Famed for their wine and fish, Marmara and Avsa offer wonderful shorelines. 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.
In ancient times the island was called Proikonesos (Προικόνησος) or Prokonnesos (Προκόννησος), Latinized as Proconnesus. The modern name "Marmara" is derived from the Greek μάρμαρον (marmaron) and that from μάρμαρος (mármaros), "crystalline rock", "shining stone", perhaps from the verb μαρμαίρω (marmaírō), "to flash, sparkle, gleam", because it was famous for the white marble quarried there. Under the name Proconnesus it is a titular see of the Roman Catholic Church (the see has been vacant since the death in 1963 of the most recent occupant), and of the Ecumenical Patriarchate of Constantinople.
Proconnesian marble is used extensively in the Hagia Sophia in Constantinople, and exclusively in the Herculean Sarcophagus of Genzano now in the British Museum. Additionally, it was used in the Basilica of Maxentius in the Roman Forum (Marble is still the island's primary export).
Historical evidence of the first Hellenic presence on the island of Marmara (ancient Prokonnessos) 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.
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 Phaeno.
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" (island of the royal dowry), and "Prinkipo", (island of the aristocracy).
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 of Thessaloniki. 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 (Oregon) 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 (Çerkesler) 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.
- Herbermann, Charles, ed. (1913). . Catholic Encyclopedia. New York: Robert Appleton Company.
- Marmaron, Henry George Liddell, Robert Scott, A Greek-English Lexicon, at Perseus
- Marmaros, Henry George Liddell, Robert Scott, A Greek-English Lexicon, at Perseus
- Marble, Compact Oxford English Dictionary
- Marmairō, Henry George Liddell, Robert Scott, A Greek-English Lexicon, at Perseus
- Proconnesus catholic-hierarchy.org
- Tuplin, Christopher (2007). Persian Responses: Political and Cultural Interaction with(in) the Achaemenid Empire. ISD LLC. p. 126. ISBN 9781910589465.
- "Erdek-Marmara Adaları Depremi 04 Ocak 1935" (in Turkish). İBB AKOM. Retrieved 2010-11-08.