Tughril I

Abu Talib Muhammad Tughril ibn Mika'il (Persian: ابوطالبْ محمد طغرل بن میکائیل), better known as Tughril (طغرل / طغریل; also spelled Toghril / Tughrul), was a Turkoman chieftain, who founded the Seljuk Empire, ruling from 1037 to 1063.

Tughril united many Turkoman warriors of the Central Asian steppes into a confederacy of tribes and led them in conquest of Khorasan and eastern Persia. He would later establish the Seljuk Sultanate after conquering Persia and taking the Abbasid capital of Baghdad from the Buyids in 1055. Tughril relegated the Abbasid Caliphs to state figureheads and took command of the caliphate's armies in military offensives against the Byzantine Empire and the Fatimids in an effort to expand his empire's borders and unite the Islamic world.

After the deaths of Seljuk leaders such as Israil and Mikail, the Seljuks submitted to the authority of Tughril Bey and began expanding their territories under the leadership of his brother, Chaghri Beg. In 1037, Tughril was declared sultan by the prominent figures of the Seljuk dynasty, and a sermon (khutbah) was delivered in his name. Following the death of Mahmud of Ghazni and the accession of Sultan Masʽud, the Seljuks, under Tughril’s leadership, engaged in several phases of warfare with the Ghaznavids. As a result, the Seljuks emerged as a new power in the Middle East after their decisive victory in the Battle of Dandanqan in 1040, which brought an end to Ghaznavid rule in Greater Khorasan and surrounding regions. Subsequently, Tughril settled in Nishapur as his capital and, with the support of his brother and close allies, established his own state.

Following the Battle of Dandanaqan, Tughril, along with the Seljuk leadership, sent a letter to the Abbasid caliph al-Qa'im bi-Amrillah, requesting an official decree of authority, which was granted. Between the years 1040–1054, with the assistance of Ibrahim Inal, Tughril conquered large parts of Iranian territory, including the regions of Jibal and Iraq-i Ajam, and brought an end to the Buyid government in these areas. He captured the city of Ray, restored it, and declared it the capital. However, after capturing Isfahan, he moved the capital there. Later, Tughril brought Azerbaijan under his control and carried out military campaigns against Byzantium and other regions of Eastern Roman territories, further expanding the Seljuk realm.

In 1055, accepting an invitation from the Abbasid caliph to visit Baghdad, Tughril initiated a new phase in Seljuk–Abbasid relations. Between 1055–1061, he eliminated Buyid rule in Baghdad, captured Malik Rahim, and had sermons read in his name in those territories. After restoring Baghdad, Tughril arranged the marriage of Chaghri Beg’s daughter to the Abbasid caliph, thus strengthening ties with the caliphate. He subsequently seized the Jazira region. Later, after suppressing a revolt by his brother Ibrahim Inal and executing him, Tughril also defeated Arslan al-Basasiri, who had the backing of the Fatimid Caliphate. He married the caliph’s daughter despite opposition from the caliph himself—a union that was accompanied by numerous challenges. Ultimately, in 1063, Tughril died without leaving an heir and left behind a vast empire.

Source: Wikipedia — https://en.wikipedia.org/wiki/Tughril_I