[1][2] He was born in Yerevan in a family of Khalil khan and belonged to the Qovanlu branch of the Qajar tribe.
[4][5] According to Ivan Chopin, with the beginning of the reign of Hasan Ali Khan Qajar, power in the Erivan Khanate began to be hereditary.
[5] During the reign of Hasan Ali Khan Qajar, the campaigns of the king of Kartli-Kakheti against the Erivan Khanate became more frequent.
As a result of these destructive campaigns, the Erivan Khanate since 1759 was forced to pay tribute annually to the treasury of Heraclius II.
[3] Hasan Ali Khan Qajar died of illness in 1759 in Yerevan.