E16/E17/E18 lists two languages in Western Australia called Ngarla [nrk] (near Port Hedland) and Ngarla [nlr] (on the Ashburton river south of the Hamersley range). The latter language is part of the same language as Yinhawangka [ywg] ( Torbjörn Westerlund 2015 :2 ). See also: Yinhawangka [ywg].
Excerpt from change request document:
Dr. Bowern judges the two languages Yinhawangka and Ngarla to be different. They are associated with different locations, as provided on the New Code Request form.
We believe that Dr. Bowern's research and expertise on languages of Australia, as well as the support of the sources listed below are sufficient to define this as a distinct language.