Gourley. I remember him scoring a slashing try in the first test against the Lions for the Wobblies in 1989. He was blindisde breakaway. Campese lost that series for us with his infamous clanger in the 3rd test.
He went to St George in 1990 and made several appearances in the Roos jumper.
There is an Australian team for gridiron - hardly the level of league and union but its an international team. If he played for them then he would technically be a dual international. Although i doubt its the person sue is after.