أحمد سنجر
After having greatly expanded Ghurid power, he had gone from a tribal chief to a king of an empire, he then took the title of "Sultan al-Muazzam." In 1152, he declared independence against his Seljuq overlords, and captured Balkh. He was, however, shortly defeated and captured by Ahmad Sanjar, who then aided the Ghaznavids in recapturing Ghazni. Ala al-Din Husayn remained a prisoner for two years, until he was released in return for a heavy ransom to the Seljuqs.