Valerie, At the risk of repeating what you may already know, Australian shipping records split into Assisted and Unassisted passengers. Then there are separate categories for crew, convicts and military escorts. Prior to about 1850, all records were kept centrally in Sydney. For Port Phillip, Melbourne, shipping arrivals to 1851 are on the NSW State Archives, but may be duplicated on Victorian State Archives. The difference being NSW have been imaged and are online. Victoria only have indexes. The question is, did she come with family? I can find no father Dennis prior to 1854 marriage. NSW Assisted Immigrant indexes have four possibilities 1844-1850. Victoria only has one that fits on age. Some of these records are also on Ancestry. If you have her death certificate it may show how long in colony, which would give clues to her arrival. But we know for sure she arrived here and was married here. So the ship's name doesn't add a real lot. You may prefer to concentrate your efforts on the Irish Genealogy site that I gave you. There are many possibilities, but sadly the search criteria leaves a bit to be desired. Peter