Emirci Sultan, whose real name was Sharaf al-Din Ismail b. Muhammad, was a shaykh of the Yeseviyye order in the tradition of Ahmad Yasawi. He lived in the present-day Yozgat region during the Seljuk period, trained disciples at the lodge he founded, and died in 1240 (AH 637). He is associated with the Babai movement; his grave lies in the tomb beside his lodge in the village of Osmanpaşa. The original gravestone inscription, in Seljuk sülüs script, survives.