Plovdiv city was possibly at times a vassal of Bulgaria or Venice. Ivan Asen II conquered the duchy finally in 1230 but the city had possibly been conquered earlier. Afterwards, Plovdiv was conquered by Byzantium. According to some information, by 1300 Plovdiv was a possession of Theodore Svetoslav of Bulgaria. It was conquered from Byzantium by George Terter II of Bulgaria in 1322. Andronikos III Palaiologos unsuccessfully besieged the city, but a treaty restored Byzantine rule once again in 1323. In 1344 the city and eight other cities were surrendered to Bulgaria by the regency for John V Palaiologos as the
Plovdiv English Language School, the High School of Mathematics, the Ivan Vazov Language School, the National Schools of Commerce Plovdiv, the English Academy, the Academy of Music, Dance and Fine Arts Plovdiv, and the French High School of Plovdiv. The city has six universities and a number of state and private colleges and branches of other universities. Those include Plovdiv University, with 900 lecturers and employees and 13,000 students; the Plovdiv Medical University, with 2,600 students; the Medical College; the Technical University of SofiaBranch Plovdiv; the Agricultural University Plovdiv; the University of Food Technologies; the Academy for Music, Dance and Fine