South of the Oakover river (Oates 1975:73). Nyamal: the hordes on the Nullagina River between Nullagine and Meentheena on the east and north to Callawa are distinguished as the ['Widagari] (they speak 'light' Njamal) (Tindale 1974).
Speaker numbers were measured differently across the censuses and various other sources listed in AUSTLANG. You are encouraged to refer to the sources.
Speaker numbers for ‘NILS 2004’ and ‘2005 estimate’ come from 'Table F.3: Numbers of speakers of Australian Indigenous languages (various surveys)' in 'Appendix F NILS endangerment and absolute number results' in McConvell, Marmion and McNicol 2005, pages 198-230 (PDF, 2.5MB).