Julien Cooper (2017) suggests that Nilo-Saharan languages of the Eastern Sudan branch were spoken by the people of Kerma, those further south along the Nile, to the west, and those of Saï (an island to the north of Kerma), but that Afro-Asiatic (most likely Cushitic) languages were spoken by other peoples in Lower Nubia (such as the Medjay and the C-Group culture) living in Nubian regions north of Saï toward Egypt and those southeast of the Nile in Punt in the Eastern dessert. Based partly on an analysis of the phonology of place names and personal names from the relevant regions preserved in ancient texts, he argues that the terms from "Kush" and "Irem" (ancient names for Kerma and the region south of it respectively) in Egyptian texts display traits typical of Eastern Sudanic languages, while those from further north (in Lower Nubia) and east are more typical of the Afro-Asiatic family, noting: "The Irem-list also provides a similar inventory to Kush, placing this firmly in an Eastern Sudanic zone. These Irem/Kush-lists are distinctive from the Wawat-, Medjay-, Punt-, and Wetenet-lists, which provide sounds typical to Afroasiatic languages."