Besni is a town of Adıyaman Province of Turkey, 44 km west of the city of Adıyaman. It is the seat of Besni District. Its population is 37,323. Th…Besni is a town of Adıyaman Province of Turkey, 44 km west of the city of Adıyaman. It is the seat of Besni District. Its population is 37,323. The city was historically known as Bahasna. It was controlled by the Byzantines until it was captured by the Umayyad army in 670. The region was retaken by the Byzantines under Nikephoros II Phokas until 1084 or 1085, when Buldaci, one of the Turkish commanders of Suleiman ibn Qutalmish, the founder of the Sultanate of Rum, conquered several castles in the region. However, Bahasna, was captured from the Seljuk Turks and controlled by the Crusaders during the First Crusade in 1097, to be ruled later by the Armenian ruler, Kogh Vasil. The Armenian Catholicos Parsegh of Cilicia was residing in the town at the time of his death around 1113/1114.