High Quality Content by WIKIPEDIA articles! Charles III (17 September 879 – 7 October 929), called the Simple or the Straightforward (from the Latin Karolus Simplex), was the undisputed King of France from 898 until 922 and the King of Lotharingia from 911 until 919/23. He was a member of the Carolingian dynasty, the third and posthumous son of Louis the Stammerer by his second wife, Adelaide of Paris.