Nasrullah Khan (Bukhara)

Nasrullah Khan or Nasr-Allah bin Haydar Tora was the Emir of Bukhara from 1827 to 1860. His father was emir Haydar bin Shahmurad (1800–1826).
After Haydar's death Mir Hussein bin Haydar came to power. He died two months later and was succeeded by Umar bin Haydar, who in 1827 was succeeded by Nasrullah.
Nasr-Allah bin Haydar Tora was ruler in a time when the Central Asian states were under pressure from the advance of the Russian Empire in the north and the British Indian Empire in the south. Nasr-Allah is best known in the West as the Emir who imprisoned and eventually executed in 1842 the British envoys Charles Stoddart and Arthur Conolly, and imprisoned but eventually released Joseph Wolff, who came in 1843 to seek news of them.
Emirate of Bukhara - Kokand Khanate Wars.
Nasrullah bin Haydar Tora organized several unsuccessful military campaigns against the Kokand Khanate. In 1839 he declared war against Kokand due to their building of the Pishagar fort near the Bukhara front. He conquered Khojand twice in 1839 and 1841, forcing the Khan of Kokand into a peace in his favour and took Ura Tepe and Khojend as compensation. The Khan of Kokand was also forced to pay a heavy amount and recognize him as lord, putting his name on the coins and the khutba. After a revolt in Khujent the Emir's forces occupied Khojent and Kokand. Madali Khan, the Khan of Kokand escaped to Marghilan, but was captured and executed in Bukhara at the end of April 1842. Nasrullah also personally ordered execution of Ali-Khan and Nodira of Kokand along with most of their families. Bukharan forces in the Khanate of Kokand were expelled after a revolt in Kokand two months later.
Nasr-Allah bin Haydar Tora died in 1860 and his son Muzaffar bin Nasrullah (1860–1885) came to power.