Gija Joseon
Many Korean historians believe that Gijun of Gojoseon was actually "Hanjun"(한준) of Gojoseon and had the surname Han (韓) not Gi and that all of the Kings of Gija Joseon were of the surname Han (韓). Gija Joseon, which was believed to be of surname Gi, was in reality Han (韓)