Actually Russie all three kids were made up entirely in the movie 'Wolf Creek' (even the guy).

The actual murders were based off of a series of about eight murders which took place in South Austrailia called the Snowtown murders. The media formed the opinion that the movie was based off of the backpacking murders which took place in Austrailia as well. But the directors stated it was indeed based on the Snowtown murders. So all three kids were completely ficticious and the premise of the movie was just based upon eight murders that took place probably over a rather lengthy period of time.

Here is the link that talks about the Snowtown murders.


http://en.wikipedia.org/wiki/Snowtown_murders