Ibak Khan
Ibak Khan was a Shaybanid khan of Sibir about whom the sources are contradictory. He is also called Abak, Ivak, Ibaq, Khan of Tyumen, and Said Ibrakhim Khan(?).

With the breakup of the Golden Horde
Golden Horde
The Golden Horde was a Mongol and later Turkicized khanate that formed the north-western sector of the Mongol Empire...

 the regional powers were the Nogais
Nogai Horde
The Nogai Horde was a confederation of about eighteen Turkic and Mongol tribes that occupied the Pontic-Caspian steppe from about 1500 until they were pushed west by the Kalmyks and south by the Russians in the 17th century. The Mongol tribe called the Manghits constituted a core of the Horde...

 south of the Urals, the Shaybanids southeast of the Urals and the Taibugas in the forested lands to the east. The last two alternated control over the Khanate of Sibir. From about 1428, the Shaybanid Abu'l-Khayr Khan
Abu'l-Khayr Khan
Abu'l-Khayr Khan was the leader who united the nomadic Uzbek tribes from which the Kazakh khanate later separated in rebellion under Janybek Khan and Kerei Khan beginning in 1466....

 killed the Siberian Khan (which one?) and established a brief empire that streatched from Sibir to the Syr Darya
Syr Darya
The Syr Darya , also transliterated Syrdarya or Sirdaryo, is a river in Central Asia, sometimes known as the Jaxartes or Yaxartes from its Ancient Greek name . The Greek name is derived from Old Persian, Yakhsha Arta , a reference to the color of the river's water...

. As people and power drifted southeast, the remaining Shaybanids coaleased around Ibak (Allworth,p47). In 1464 (many sources), or after Abu’l Khayr’s death in 1468 (Forsyth.p25) or about 1480 (Grosset) Ibak, with the help of the Nogais, killed Mar, the Taibugid Khan, and became the Khan of Sibir.

At some date, the Nogai brothers Musa and Yamgurchi were at war and Yamgurchi invited Ibak from Tyumen. He appeared along the Volga claiming to have a better right to rule the Great Horde
Great Horde
- Dissolution of the Golden Horde :The peripheral regions of the Golden Horde broke off as follows: 1438: Kazan Khanate, 1441: Crimean Khanate, 1466: Astrakhan Khanate The remnant, which became known as the Great Horde, was left with the steppe between the Dnieper and Yaik, the capital Sarai and a...

 than Ahmed Khan (Howarth,p980). At the time of the Ugra standoff Ibak may have has some arrangement with Moscow to threaten Ahmed in the rear. In 1491 Ibak and Yamgurchi (and Musa?) killed Ahmed Khan. (Khodarkovsky in a footnote implies that there is some doubt about the details). In 1495(most common), or 1494 , or 1493 (Grosset, p 489) Ibak was killed by Mamut, a grandson of Mar (Howarth,p981), who then became Khan of Sibir.

His son Murtaza was a power on the Steppe after 1502. His grandson Kuchum
Kuchum khan Kuchum khan (Tatar: Küçüm, Күчүм, Russian: Кучум; in Sybyr Küçüm is pronounced approximately as /kytsym/ - Күцүм, English name comes from standard Tatar pronunciation)Kuchum khan (Tatar: Küçüm, Күчүм, Russian: Кучум; in Sybyr Küçüm is pronounced approximately as /kytsym/ - Күцүм,...

 was the last Khan of Sibir. His younger brother Mamuk
Mamuq of Kazan
Mamıq khan , prince of Siberia Khanate, khan of Kazan . He was a brother of İbaq khan. After the murder of Ibaq in 1495, he left Tyumen Ulus and led faithful Tyumen troops and Nogais to Kazan. With the support of coup of qarachi Qolmöxämmäd he occupied Kazan throne in 1495. He struggled against...

 was briefly (1495–96) Khan of Kazan.
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.