Rukn al-Din Jahanshah bin Tughril (r. 1225–1230) was a Turkoman king of the "Seljuqs of Erzurum". He was a son of Tughril ibn Kılıç Arslan II, also ruler of Erzurum (r. 1202–1225). Jahanshah was a grandson of Kilij Arslan II, who had partitioned his kingdom in Anatolia between his numerous sons.
Before the 1201–1202 conquest of Erzurum by Suleiman II of Rûm, son of Kilij Arslan II, the region of Erzurum had been ruled by a local Turkoman dynasty, the Saltukids from 1071 until 1202. Quote: "The Saltuqids' main role in the political and military affairs of the time was in warfare with the Georgians, expanding southwards from the time of their king David the Restorer (1089-1125), often as allies of the Shah-i Armanids (see above, no. 97); but in a curious episode, Muhammad b. Saltuq II's son offered to convert to Christianity in order to marry the celebrated Queen T'amar of Georgia. The last years of the family are unclear, but in 598/1202 the Rum Seljuq Sulayman II, while en route for a campaign against the Georgians, put an end to the Saltuqids; and for some thirty years after this, Erzurum was to be ruled by two Seljuq princes as an appanage before Kay Qubadh I in 627/1230 incorporated it into his sultanate." During the 30 years after this conquest, Erzurum was ruled by the two Seljuq princes Tughril ibn Kılıç Arslan II and Jahan Shah bin Tughril as an appanage.
Jahanshah bin Tughril participated to the Siege of Ahlat.
He also allied with the Khwarizmian Shah Jalal al-Din, until he was defeated at the Battle of Yassı Çimen in 1230.
The region of Erzurum was incorporated into the Sultanate of Kay Qubadh I in 1230.
References
Sources