Dixon (2002, 2007 p.c.) treats Thaagurda as a possible name for Cheangwa language on the basis of the location of Thaagurda W15 given in Marmion (1996).
Blevins (2001:5) suspects that Cheangwa is a Nhanda W14 word - 'Jianga' is the name of a place near the Murchison where there is a big thicket and '-waa' is the Nhanda suffix meaning 'with'.
O'Grady et al. treat Cheangwa as an alternative name for Widi A13.
Thieberger (1993) lists Cheangwa as an alternative name for Wajarri A39.
Language data from Perks in Curr (1886) is associated with the name Cheangwa, though the name is used only to describe the location of a 'tribe' and their language, neither of which are named. This location is within the boundaries described for both Widi A13 and Daguda W15. A comparison of the data in Curr with other language data may clarify the identity of 'Cheangwa'. Until more is known, Cheangwa is treated as a distinct language variety.
Cheangwa Hill' (Coordinates: 116.23 x 27.29).
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).