Wikipedia
Anseung
Anseung (안승, 安勝) ( fl. 668–683), alternately Ansun (안순, 安舜), was thought to be either the nephew or illegitimate grandson of king Bojang of Goguryeo, the last King of Goguryeo. He was named the new King of Goguryeo by general Geom Mojam, but later he murdered Geom and submitted to the Korean kingdom of Silla, taking up residence in the Silla capital of Gyeongju.