Mahmud II (Seljuk sultan)
Mughith al-Dunya wa'l-Din Mahmud bin Muhammad known as Mahmud II was the Seljuk sultan of Iraq from 1118–1131 following the death of his father Muhammad I Tapar. At the time Mahmud was fourteen, and ruled over Iraq and Persia.
Biography
During Mahmud's early reign, his vassal king Garshasp II, who was a favorite of his father Muhammad I, fell into disgrace. Slander about him spread to the court that made him lose confidence, and made Mahmud send a military force to Yazd where Garshasp was arrested and jailed in Jibal, while Yazd was granted to the royal cupbearer. Garshasp, however, escaped and returned to Yazd, where he requested protection from Mahmud's rival Ahmad Sanjar.Garshasp urged Ahmad to invade the domains of Mahmud in Central Persia, and gave him information on how to march to Central Persia, and the ways to combat Mahmud. Meanwhile Ahmad had his own ambitions, wishing to restore the unity of the Great Seljuks under one Sultan, as had been prior to the death of Malikshah. Mahmud's attempt of placating his uncle with a large tribute of 200,000 dinars, coupled the cession of Mazandaran, failed.
Using the excuse of his nephew's youth, manipulated by his viziers, Ahmad advanced westwards, until in September 1118 he and five kings met Mahmud at Saveh. Here, Sanjar almost faltered, outnumbered, in unfamiliar terrain and with water supply in the hands of Mahmud; it was only the last minute intervention of Sanjar's 18 war elephants, frightening Mahmud's cavalry, which won the day.
Victorious, Sanjar pushed to Baghdad. Whereupon Mahmud was married to one of Sanjar's daughters and made his uncle's heir. However, the narrowness of his victory highlighted to Sanjar just how precarious his situation was. Outnumbered and without local support he returned everything to Mahmud save for Rayy and restored the domains of Garshasp II, before returning back east.
Mahmud's younger brother Mas'ud revolted against him in 1120, but the civil war ended the following year due to the intervention of the atabeg of Mosul, Aqsunqur al-Bursuqi, and Mas'ud was pardoned. In 1126, al-Bursuqi was murdered by Assassins, believed have been under orders from Mahmud. In 1127, he appointed Anushirvan ibn Khalid as his vizier, but had him removed from the office the following year. In 1129 Mahmud officially recognized the authority of Imad al-Din Zengi, who had supported him against a revolt led by al-Mustarshid, caliph of Baghdad, in Syria and northern Iraq. Mahmud ruled from Isfahan, while his Shihna military governors for Iraq were based in Baghdad, except for a campaign which he led personally against the Caliph of Baghdad in 1126.
Mahmud, then aged 27, died on 11 September 1131. His death was followed by a civil war between his son Dawud, and his brothers Mas'ud, Suleiman-Shah, and Toghrul II. His other son Alp Arslan ibn Mahmud was ruler of Mosul under the protection of atabeg Zengi.