Sutton says that Mbara G21 and Mitjamba (G18) are the same dialect, and are mutually intelligible with Yanga Y131 (in Oates 1974:298). Oates subsumes Mbara under Midjamba. Sutton says Mitjamba may be an exonym for Mbara, used by a Gudjal E60 person, and that Bargal G22 may be a Ngawun G17 exonym for Mbara (1976:103).
On Woolgar and Stawell rivers; north to Gregory Range and Gledswood; west to near Saxby Downs; east to Chudleigh Park; south to Cambridge Downs (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).