Of course there are surnames like"wang王,蔡"for example"蔡妍"“蔡东河”........不过我不认识太多韩国明星，所以有没有姓王的明星我就不太清楚了......I don't know many Korean stars so I don't know if there any pop star whose surname is“wang王”

Recently I am reading a book borrowed from our college's library,called"the development of Korean(the language)"...and when it comes to the period of Goryeo高丽王朝...it's said that the founding fathers named"王建wang jian"