The final expansion occurred during the middle of the nineteenth century when the Nandi took the Uain Gishu plateau from the Uasin Gishu. Traditions contained in the tale of Tapkendi however seem to indicate that the plateau was previously held by the Nandi and that Nandi place names were superseded by Maasai names. This is further evinced by certain "Masai place-names in eastern Nandi which indicate that the Masai had temporary possession of strip of Nandi roughly five miles wide", these include Ndalat, Lolkeringeti, Nduele and Ol-lesos, which were by the early nineteenth century in use by the Nandi as koret names.