History of Plovdiv it was re-conquered by George Terter II of Bulgaria in 1322. Byzantine rule was restored once again in 1323, but in 1344 the city was surrendered to Bulgaria by the regency for John V Palaiologos as the price for Ivan Alexander of Bulgaria's support in the Byzantine civil war. In 1364 the Ottoman Turks under Lala Shakhin Pasha seized Plovdiv. The Turks called the city "Filibe". It was the capital of Rumelia until 1382 when the Ottomans captured Sofia, which became the main city of the province. Plovdiv survived as one of the major cultural centers for Bulgarian culture and
Plovdiv is the second or the third-largest cosmopolitan city inhabited by Bulgarians, after Sofia and possibly Varna. According to the 2001 census, out of a population of 338,224 inhabitants, the Bulgarians numbered 302,858 (90%). Stolipinovo in Plovdiv is the largest Roma neighbourhood in the Balkans, having a population of around 20,000 alone; further Roma ghettos are Hadji Hassan Mahala and Sheker Mahala. Therefore, the census number is a deflation of the number of Roma people, and they are most likely the second-largest group after the Bulgarians, most of all because the Muslim Roma in Plovdiv claim to be of Turkish ethnicity