Ireland-Australia Transportation Records (1791-1853) (http://findingaids.nationalarchives.ie/index.php?category=18&subcategory=147) is a free, online database at the National Archives of Ireland. The collection includes:

• Transportation Registers (1836-1857)

• Prisoners’ Petitions and Cases (1788-1836)

• State Prisoners’ Petitions (1798-1799)

• Convict Reference Files (1836-1856: 1865-1868)

• Free Settlers’ Papers (1828-1852)

• Male Convict Register (1842-1847)

• Register of Convicts on Convict Ships (1851-1853)

The Search results vary but may include full name, sex, age, trial place, trial date, crime, sentence, ship, comments, and a reference for the record source.

Also see the pdf “Sources in the National Archives for research into the transportation of Irish Convicts to Australia” and FAQs on transportation to Australia.