Tutush I
Kerbogha was a Seljuk Turk who owed his success to his military talent. He supported Malik-Shah I's wife Terken Khatun and her four-year-old son Mahmud I who was installed on the throne at Baghdad. Kerbogha was sent with an army to secure Isfahan and to arrest Berkyaruq. However, Mahmud's supporters were defeated by Berkyaruq' forces at Isfahan in January 1093. A month later, he joined the Seljuk prince Ismail ibn Yaquti against Berkyaruq army which was victorious once more. Later on, Kerbogha joined Berkyaruq, then he was sent in 1094 to fight against Tutush I who declared himself Sultan in Syria, but he was imprisoned along with his brother Altuntaş in Aleppo then Homs. Upon the death of Tutush, he was released by Fakhr al-Mulk Radwan.