Is this Robert's Qld death reg., 1936? Mother's maiden name Golden?
1936/C1523 Robert Bruce Newlands William Catherine Soeden
A 1917 Queensland obituary below for his brother John (Source: TROVE)http://trove.nla.gov.au/ndp/del/printArticleJpg/20150912/4?p...
Qld. death reg.
1917/C2755 John Newlands William Newlands Catherine Golding
(I had to Google 'Boggabilla'. Looks like it's almost on the NSW/Queensland border).
Edited to add:
Another sibling died in Queensland, 1869
1869/C307 William Newlands William Newlands Catherine Golden