Nizam Al-Mulk
Abu Ali al-Hasan al-Tusi Nizam al-Mulk (1018–1092), better known as Khwaja Nizam al-Mulk Tusi (Persian: خواجه نظامالملک طوسی - Khwāğa Nizāmu l'Mulk al-Ṭusī) was a Persian scholar and vizier of the Seljuq Empire. He was also for a short time the sole ruler of the Seljuq Empire.
"Nizam al-Mulk" was an honorific which he assumed after achieving prominence. It translates into English as: "good order of the kingdom."
Read more about Nizam Al-Mulk: Biography