The Later Three Kingdoms of Korea (892–936) consisted of Silla, Hubaekje ("Later Baekje") and Hugoguryeo ("Later Goguryeo", it was replaced by Goryeo). The later two claimed heirs to the earlier Three Kingdoms of Korea, which had been united by Silla, even though Hugoguryeo has little to do with Goguryeo. This period arose out of national unrest during the reign of Queen Jinseong of Silla, and usually refers to the era between the founding of Hubaekje by Gyeon Hwon to the time Goryeo unified the peninsula.