In the course of the conquest of Anatolia by Turks, the Armenians in the Eastern Anatolia retreated to the western regions and started to establish new political foundations within the environs of Urfa. One of them was the Armenian Philaretos that established dominion in the Antioch. However, Philaretos was disliked by everyone and he was the target of heavy allegations asserted by his own fellow countrymen and even the treachery of his son. As a result, his son, Barsam ran way from prison and went to Iznik and encouraged Suleymanshah for the conquest of Antioch. With the adequate forces, Suleymanshah advanced only at nights in order not to make anybody perceive this progress and he arrived in the Antioch in twelve days. He penetrated into the city from the predetermined points and he captured the city without any pains through the support of its people (December in 1084). Therefore, the Antioch, a fortified city that was in the key position for el-Cezire and Syria was conquered by Suleymanshah. The capture of this city by Suleymanshah caused discord between Suleymanshah and Tutus that was the ruler of Syria. Suleymanshah besieged Aleppo in April 1086 and this blockade led the two Seljuk princes to a war. In the war that took place in Ayn-i Seylem, Suleymanshah was defeated and his army was dispersed and he hlost his life in this war (4th June 1086). Suleymanshah who was submissive to Sultan Melikshah had conquered the most significant part of Anatolia within a short term of ten years and he laid the foundation of a new Turkish State in this region. His conquests caused great joy and delight in the Islam world. Therefore, Abbasi caliph had sent him flag and the robe of honour and he was granted the title of "Nâsır'üd-Devle Ebu'l-Fevâris". Suleymanshah was entitled with the title of Ghazi since he did not arrange any expeditions and conquests in Non-Muslim countries.