تتش بن ألب أرسلان
His father was Artuk, a commander in the Seljuk Empire. He supported Tutush I, a member of the Seljukid house whose province was Greater Syria. Tutush appointed him as the governor of Jerusalem. After his death in 1091, Sökmen and his brother Ilghazi became the co-governors of the city. However, Sökmen lost his position when Jerusalem was taken by the Fatimids in 1098. Sökmen abandoned the city and moved to north.