Source: http://davidvictorvector.blogspot.com/2012/01/year-of-dragon-some-background.html

King Moon-Mu of Unified Silla

King Moon-Mu of Unified Silla Dynasty (문무왕​; b. 626 - d. 681; birth name: Kim Bup-Min (김법민​)) - considered to be the first ruler of the Unified (Later) Silla Dynasty or period (starting in 668).  The Unified (Later) Silla Dynasty lasted until the Koryo Dynasty was established in 918, although it reportedly surrendered officially to the Koryo Dynasty in 935.

​Despite its name, the Unified (Later) Silla Dynasty reportedly did not fully unify all the peoples of the Korean Peninsula, unlike the Koryo Dynasty.