Tony, Do you have the exact shipping details? Have you looked for original documents rather than just extracted index data? I believe they are in Victorian State Archives. I live in Sydney, so have never been able to access them. I've seen the NSW equivalents which are brilliant sources of data, especially for assisted immigrants, which most were. Depending on the date, early Port Phillip (Melbourne) arrivals were kept in Sydney. There are two sets of papers, the shipping line and the papers relating to assistance. NSW Archives has recently digitised the shipping papers. But you need to look at both. Many you will find on Ancestry. Somewhere in all of that you should find an townland and perhaps names of parents or relatives in Australia. Peter