Nyungar Anew(1988). C. von Brandenstein.p. vi-vii. This quote is provided to give a flavour to the late Dr. von Brandenstein's theory regarding the evolution of Noongar as well as to highlight the importance of Charlie Dabb's information as the basis for Nyungar Anew
Based on Tindale's and my own enquiries, the situation of the south coast between Bremer Bay and Israelite Bay prior to full annexation by the whites can be assessed broadly as follows: as elsewhere in Australia, frequent clashes occurred between aggressive 'law' factions of the interior tribes and the more conservative non-circumscribing tribes along the coast.[Israelite Bay, was named by la Perouse, because he first saw circumcised men there] During one of these clashes, most likely just prior to the 18th century, circumcising northern Ngadjumaya succeeded in converting substantial numbers of young Shell-People[south coast people around Esperance] to the law of the western Desert people. Those who 'joined' were called 'allies' by the Ngadjumaya and accepted the new name Nyungurra.
Those, however, of the Shell-people who objected to the conversion of their kinfolk and resented the alien rites, reacted by severing their ties with the Nyungurra and by moving to the west, joining their socially and culturally related neighbours west of the young River and Fanny Cove, Again the Ngadjumaya provided a new name for them which they accepted: Wudjaarri, the 'Runaways'. We may take it for granted that the westward movement of the Wudjaarri initiated a major migration. The last good Nyungar speaker from Esperance, Charlie Dab, told me that the Wudjarri extended their territory from Cape Arid in the East to Ravensthorpe in the west.
...
The Nyungurra Shell-Peolpe remaining east of Esperance and calling themselves Nyungar... experienced another onslaught from the north some time later, when a dispute arose about their eastern boundary with the Ngajumaya near Gegelup. Geegulup is MNFS Tjiurrt-yaalap for Tyirndu-yala-ba 'White-earth-become', which went into Ngajumaya as Tjidyilanya.The Nyungar name of the decisive border point at a waterhole was chosen as Qaip-qiity-aq-qiity (Tindale's Kaapkidjakidj 1974:78, 254), which literaly 'Water-spear-to-spear', i.e. the 'spear after spear water', thus indicating some heavy fighting took place there. The exact position of the waterhole was also disputed; the Nyungar placed it near Gegelup, the Ngadjumaya near Point Malcolm. But there can be no doubt about the disputed triangular portion of land from Point Malcolm to Mt Ragged and Point Gegulup being Shell People's, now Nyungar's, land right and not Ngadjumaya's.