The (CAPITALIZED) lyrics posted above by Don of Poteen, the romantic lament for the dead girl, are the original Stephen Foster lyrics.
The Aussie version with the double entendre posted by John (in lower case) is sung to Foster's tune on the Bok-Muir-Trickett CD, with the lyrics posted in lower case above.
I have no idea how Eugene O'Donnell came into it, in '94 (BTW, was that 18 or 19?) or did he write an altogether new tune for Foster's words? That would take courage.