Malik-Shah I

Malik-Shah I (Persian: ملک شاه یکم) was the third sultan of the Seljuk Empire from 1072 to 1092, under whom the sultanate reached the zenith of its power and influence.

During his youth, he spent his time participating in the campaigns of his father Alp Arslan, along with the latter's vizier Nizam al-Mulk. During one such campaign in 1072, Alp Arslan was fatally wounded and died only a few days later. After that, Malik-Shah was crowned as the new sultan of the empire, but the succession was contested by his uncle Qavurt. Although Malik-Shah was the nominal head of the Seljuk state, Nizam al-Mulk held near absolute power during his reign. Malik-Shah spent the rest of his reign waging war against the Karakhanids to the east and establishing order in the Caucasus.

Source: Wikipedia — https://en.wikipedia.org/wiki/Malik-Shah_I