A Lost Irish Orphan

Hi I'm trying to search for the roots of my GGGmother who I believe may have come to Australia from Garden Blake in Co Galway. This has been a long and so far on going search for any possible clues.  

I will be visiting Ireland in November this year. So I am hoping that with a bit of luck and some help along the way I may be able to locate some records that will confirm some of my guess work.

The difficulty is of course that as Bedelia, Bridget or Biddy Mackanany  was illiterate. the documents  that I already have provide conflicting dates of birth and dates of arrival in Australia.

She consistentlyr gives her place of birth as Garden Blake  Co Clare. I can only find a Garden Blake  in Galway.

Her parents were James Isaac Mackanany  or perhaps Mcinerney and Margaret (No maiden name). I have done a number of searches in the various Griffith indexes etc but have had no luck to date. I have now begun to wonder how I go about searching the poorhouse registers and emigration lists from about 1853 to 1857.

Any ideas or suggestions would be very much appreciated.

Lee Norris