Subuk was a ghulam

Ghilman

Ghilman Ghilman Ghilman (singular ghulam describes either young servants in paradise or slave-soldiers in the Ottoman, Mughal and Persian Empires.-Islamic Theology:...

 who gained the governorship of Azerbaijan

Azerbaijan (Iran)

Azerbaijan or Azarbaijan , also Iranian Azerbaijan, Persian Azarbaijan is a region in northwestern Iran. It is also historically known as Atropatene and Aturpatakan....

 in 919

919

Year 919 was a common year starting on Friday of the Julian calendar.- Europe :* Edward the Elder of England conquers Bedford....

 and held it for three years.

In 919

919

Year 919 was a common year starting on Friday of the Julian calendar.- Europe :* Edward the Elder of England conquers Bedford....

 Subuk's master, the Sajid Yusuf Ibn Abu'l-Saj, was captured by forces of the caliph, who he had been at war with. Acting in order to protect Yusuf's interests, Subuk took control of Azerbaijan. After defeated a caliphal army he was recognized as governor of the province by al-Muqtadir

Al-Muqtadir

Al-Muqtadir was the Abbasid Caliph in Baghdad from 908 AD to 932 AD .After the previous Caliph, al-Muktafi, was confined for several months to his sick-bed, intrigue was made for some time as to his successor...

. For the next three years he awaited the return of Yusuf. The latter was freed from prison and returned to Azerbaijan in 922

922

Year 922 was a common year starting on Tuesday of the Julian calendar.- Asia :* The Khitan Empire, led by Abaoji, raids Hebei, China.- Deaths :* March 26 – Mansur Al-Hallaj, Sufi writer...

; Subuk had died by that time.