Mohammad Khan Qajar
Āghā Moḥammad Khān Qājār (1742–1797; Persian: آغا محمد خان قاجار) was the founder of the Qajar dynasty of Iran, ruling from 1789 to 1797 as king (shah). He was originally chieftain of the Qoyunlu branch of the Qajar tribe. In 1789, Agha Mohammad Khan was enthroned as the king of Iran, but was not officially crowned as its king until March 1796. On 17 June 1797 Agha Mohammad Khan was assassinated, and was succeeded by his nephew, Fath-Ali Shah Qajar.
Agha Mohammad Khan's reign is noted for the reemergence of a centrally led and united Iran. Following the death of Nader Shah (d. 1747), many of the Iranian territories in the Caucasus that had been ruled by the various subsequent Iranian dynasties since 1501, today comprising Georgia, Dagestan, Azerbaijan, and Armenia had broken apart into various Caucasian khanates or had declared de facto independence as in Georgia's case. After 48 years, they were all reconquered by Agha Mohammad Khan. Some of his reconquests were even for that time, exceptionally cruel, such as his re-subjugation of Georgia, where he sacked the capital Tblisi and massacred many of its inhabitants, and moving away some 15,000 Georgian captives back to mainland Iran.