Romanovych dynasty [Romanovyč]. A branch of the Riurykide dynasty, descended from Roman Mstyslavych, that ruled the Principality of Galicia-Volhynia from 1200 to 1340. Its most noted members were the princes Danylo Romanovych, Lev Danylovych, Yurii Lvovych, Andrii Yuriiovych, Lev Yuriiovych, and Yurii II Boleslav.