Hi Jenny,
Thank you for your message.
If Mary Anne and Daniel married in Ireland after 1864 there would be a record of it in civil records as this is the year that civil registration became mandatory in Ireland. Civil records are available from the General Register?s Office in Dublin. Here is their website:
http://www.groireland.ie/research.htm
You can search the indexes to these records online at:
https://familysearch.org/search/collection/1408347
If you can find their marriage certificate it should give you a place of origin for them.
Also, you can use Griffith?s Valuation to see what parishes in Limerick were recorded as having Corboy?s living there 1848-1864. I already did a search and 3 parishes were listed:
http://www.askaboutireland.ie/griffith-valuation/index.xml?action=doNameSearch&Submit.x=46&Submit.y=10&Submit=Submit&familyname=corboy&firstname=First+Name&countyname=LIMERICK
You could also try looking for information in church records, however you really need to know the parish name where the birth,death or marriage took place to know where to look. Most surviving Church of Ireland records are still held by the local clergy, although some are in the National Archives of Ireland and others are in the Representative Church Body Library in Dublin. Here are their websites: http://www.nationalarchives.ie/ and http://ireland.anglican.org/about/42
Lists of these surviving registers can also be found at the National Library of Ireland.
Some other websites that you may find useful are:
The National Archives of Ireland http://www.nationalarchives.ie/genealogy1/genealogy-records/introduction/
The National Library of Ireland http://www.nli.ie/en/family-history-introduction.aspx
Familysearch: www.familysearch.org
Genealogy links: http://www.genealogylinks.net/uk/ireland/limerick/index.html
Limerick Library: http://www.limerickcity.ie/Library/LocalStudies/
I hope some of 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