Nope. Bassendean, Perth WA. His parents were from South Wales (Barry IIRC).
Elle MacPherson!
Wooly, what are you on? Rupert Mudroch, father of Mr Lachlan “the best media is the sort that makes a profit” Murdoch? Highest arsehole of the highest degree Murdoch? Only slightly worse than Mr Robert “I’ll destroy any chance Australia had as a major technological influence on the world stage” Menzies?
These are two of the lowest Australians in our whole history. Next you’ll be holding up Ray Martin as an idol.
The OP stated “most influental Australian”. Didn’t even mention positive or negative, so your 2c worth only endorses their nomination.
Of course gex gex you’re are welcome to contribute your own nominations, if that isn’t too taxing.
I too stand chastened…for I had the term greatest firmly embedded in my head, conveniently overlooking the word influential that was also included in the OP. Rupert might well fit the latter, but NEVER the former.
In terms then of INFLUENTIAL, we should include the likes of Paul Hogan and Steve Urrghwin, for they have had a great influence on Australia. We now embrace our quirky, unique ‘Australianess’ instead of cringing in embarrassment due in much part to their PR work and our (relatively new found) recognition (validation??) by Merkins.
But Woolly, d’ya REALLY want to include them? 
You don’t cringe at Steve Irwin?
CROIKEY!
Oh, Loaded, I cringe lowly and desperately when I see Steve strut his stuff…
But Aussies in general now are happier to say they’re Aussies without having to add an apology! Nor do we attempt to cultivate a ‘faux-english-aristocrat’ accent in order to deny our true roots*. Now we can say ‘CRIKEY’ and get away with it. Whether you love him or hate him, (and personally, I think he’s a git) he has done much for our collective self-esteem. We’re no longer just here as an interlude from our ‘real’ life in England or Europe.
*One of the traditional indicators of the class system in Australia has been one’s ‘accent’, with those from the upper echelons (and upper-class wannabees) adopting an English ‘toffy’ tone, and those from the lower or working classes sounding more like Steve or Paul. This has slowly eroded over recent decades, and now the old ‘plum in mouth’ accent has all but disappeared from our dialect. However, I hear one every now and again in my role as a telemarketer, and it sounds sooooooooo dodgy that you just want to jump through the phone and shake the (invariably middle-aged) woman (women can stick more of those plums in their gobs!).
I thought that footnote was going to be something else.
Here TLD…[kambuckta chucks a Jex and a bottle of Nifti up over the Murray]
Go give yer mind a good scouring…
It’s Sunday morning (and despite what anyone says, it’s REALLY only 10.15 am!). I keep my R-rated stuff 'til the sun goes down!