The Dulebes, Dulebs, Dudlebi or Dulibyh (Ukrainian: Дуліби) were one of the tribal unions of Early Slavs between the 6th and the 10th centuries. According to medieval sources they lived in Western Volhynia, as well as southern parts of the Duchy of Bohemia and the Middle Danube between Lake Balaton and the Mur River (a tributary of the Drava) in the Principality of Hungary, probably implying migrations from a single region.[1]