Daily Fail has just sensationalized that grave. I also researched the grave and found a death notice on Trove and yes the dates seem a bit off. The Smallacombes was linked to Paratoo. Under the photo of the grave it says "on a property near to where Gus went missing".
I think you'll find that some of Paratoo's boundary is shared with the junk yard boundary that's now owned by the Murray's. Year's ago the junk yard by have been Paratoo property and sold off. But there is quite a few entries regarding "Smallacombe" on Trove.
But totally agree that Smallacombe family name is definitely not linked with Gus’s Ancestry.
Australia’s free online research portal. Trove is a collaboration between the National Library of Australia and hundreds of Partner organisations around Australia.
trove.nla.gov.au