Hi Fionnghuala,
Thank you very much for your message.
Did you know that Irish Genealogy have uploaded Catholic church records from the Diocese of Cork and Ross to their website free of charge? If Julia was born around the area of Kilmurry/Bandon/Bantry etc you should be able to find her birth record here. This would give you her parents names which would then in turn allow you to search for possible siblings.
http://churchrecords.irishgenealogy.ie/churchrecords/
Another useful website is the Irish Times where they give an overview of what records are available in specific parishes:http://www.irishtimes.com/ancestor/browse/counties/rcmaps/corkswrc.htm
I hope this is helpful. Please be patient - as our programme has only begun to rollout across the island of Ireland and volunteers in some areas may not yet be organized.
Kind regards,
Genealogy Support