Plovdiv price for Ivan Alexander of Bulgaria's support in the Byzantine civil war of 1341–47. In 1364 the Ottoman Turks under Lala Shahin Pasha seized Plovdiv. According to other data, Plovdiv was not an Ottoman possession until the Battle of Maritsa in 1371, after which, the citizens and the Bulgarian army fled leaving the city without resistance. Refugees settled in Stanimaka. During the Ottoman Interregnum in 1410, Musa Çelebi conquered the city killing and displacing inhabitants. The city was the centre of the Rumelia Eyalet between 1364 and 1443, a sanjak centre of it between 1443 and 1593, the sanjak centre
Plovdiv the Slavic name began to appear as "Papaldiv/n Plo(v)div, Pladiv, Pladin, Plapdiv, Plovdin", which evolved from a Thracian variant "Pulpudeva". As a result, the name has lost any meaning. In British English the Bulgarian variant "Plòvdiv" has become prevalent after World War I. The Crusaders mentioned the city as "Prineople", "Sinople" and "Phinepople". The Ottomans called the city "Filibe", a corruption of "Philip", in a document from 1448. Plovdiv is located on the banks of the Maritsa river, southeast of the Bulgarian capital Sofia. The city is in the southern part of the "Plain of Plovdiv", an alluvial plain that