Later in the 16th century, other Luo-speaking people moved to the area that encompasses present-day South Sudan, Northern Uganda, and North-Eastern Congo (DRC) – forming the Alur, Jonam and Acholi. Conflicts developed when they encountered the Lango, who had been living in the area north of Lake Kyoga. The Lango also speak a Luo language. According to Driberg (1923), the Lango reached the eastern province of Uganda (Otuke Hills), having traveled southeasterly from the Shilluk area. The Lango language is similar to the Shilluk language. There is no consensus as to whether the Lango share ancestry with the Luo (with whom they share a common language), or if they have closer ethnic kinship with their easterly Ateker neighbours, with whom they share many cultural traits.