Taejo of Goryeo
Gyeongsun of Silla surrendered and named Wang as his successor in 935 CE, and in the same year Gyeon, who had escaped to Later Goguryeo territory, appealed to his old enemy Wang for help to remove Gyeon Singeom. Gyeon led a Goguryeo army to Baekje, and the resulting civil war and death of both Gyeon Singeom and Gyeon Hwon in 936 CE, greatly weakened Baekje and allowed Wang to finally unify the country once again under the name of Goryeo, origin of today's name for Korea. Wang, posthumously given the title of Taejo of Goryeo or 'Great Founder,' established a dynasty which would rule Korea for the next five centuries.