Yup, Bagratunis were among the longest reigning dynasties in the region (in all of Europe & Middle East, AFAIK). The last name still pops up even today, in various dialectal forms. Like this Lebanese-Armenian politician: https://en.wikipedia.org/wiki/Karim_Pakradouni
Oh, and this dude: https://www.linkedin.com/in/prince-ioane-bagrationi-mukhrane...
He was also from Bagratid dynasty that ruled the city of Ani.