Last Mamikonians
By 750, Mamikonians lost Taron, Khelat, and Mouch to the Bagratuni family. In the 770s, the family was led by Artavizd Mamikonian, then by Musel IV (+772) and by Samuel II. The latter married his daughter to Smbat VII Bagratuni, constable of Armenia. His grandson Smbat Msaker ("the Carnivore") became forefather of Bagratid rulers of Armenia and Taron.
Mamikonians are known to have led a national rebellion against the Arab Caliphate in 774-775. After the rebels were rooted out, Mamikonians' supremacy in Armenia came to an end. Even in their homeland of Tayk, they were succeeded by the Bagratids. One Kurdik Mamikonian was recorded as ruling Sasun c. 800. Half a century later, Grigor Mamikonian lost Bagrevand to the Muslims, reconquered it in the early 860s and then lost it to the Bagratids for good. After that, Mamikonians pass out of history.
After their disastrous uprising of 774, some of the Mamikonian princes moved to the Georgian lands. The latter-day Georgian feudal houses of the Liparitids-Orbeliani and Tumanishvili are sometimes surmised to have been descended from those princes.
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