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Lopadion

Lopadion , Latinized as Lopadium, modern Turkish name Ulubad/Uluabat, was a Byzantine settlement and fortress in Mysia, in northwestern Asia Minor.

Lopadion is located on the banks of the Rhyndacus river. It is first mentioned by Theodore of Stoudios in one of his letters, as the site of a xenodocheion ( caravanserai). By the late 11th century, it featured a market town. The existence of a 4th-century bridge carrying the road between Cyzicus on the Sea of Marmara to the interior of Asia Minor made it a place of some strategic importance, especially in the wars of the Komnenian emperors against the Seljuk Turks in the 11th–12th centuries, during which it is best known. Alexios I Komnenos (r. 1081–1118) fought the Turks in the vicinity, and in 1130, his successor John II Komnenos (r. 1118–43) built there a great fortress which became the base of his campaigns against the Turkish Sultanate of Rum. During the same period, Lopadion is attested as an archbishopric. In 1147, the French and German contingents participating in the Second Crusade united at Lopadion.

Following the fall of the Byzantine Empire to the Fourth Crusade in 1204, the fortress was briefly occupied by the Latin Empire, who returned after the Battle of the Rhyndacus in 1211 and until ca. 1220. It then returned to the Empire of Nicaea, and remained in Byzantine hands until it was captured by the Ottoman Turks in 1335.