Togan Arslan was a Turkish bey of the Beylik of Dilmaç.
After Alp Arslan of Seljukids defeated Byzantine army in the battle of Manzikert in 1071, a series of Turkmen beyliks (principalities) were formed in Anatolia (Asiatic part of present Turkey) before Anatolia was united by the Sultanate of Rum.
[1] Together with Ilghazi, Togan Arslan participated in military operations against Crusaders.
The most important was the Battle of Ager Sanguinis in 1119 where Roger of Salerno lost his life.
In 1134, Imadettin Zengi, from Mosul, one of the most powerful commanders of the region tried to capture Bitlis.