Hi Maria,
Thank you for your message. I hope that someone with information contacts you and helps you to further your research.
Civil registration did not begin in Ireland until 1864 so you will not be able to get a birth record for Thomas etc. Instead you will have to look at baptismal records. Most Catholic records are held locally so you may need to write to the local parish priest for possible assistance. One website that you may find useful is the Irish Times where they give an overview of what records are available in specific parishes. It also shows you where copies of the records are available. For Catholic parishes in Cavan , follow this link:
http://www.irishtimes.com/ancestor/browse/counties/rcmaps/cavanrc.htm
There are some places where you can search online, however these do not have complete collections:
www.familysearch.org has a huge database of genealogical records including some church records for Ireland.
www.rootsireland.ie have a large collection of Irish Church records, however you have to pay to use this site.
If his parents died after 1864, there would be a civil record of it, however without knowing the when and the where it may be difficult to find these. These civil records are available from the GRO, here is their website:
http://www.groireland.ie/
The indexes to these records can be searched online (up to 1958). I did a quick search for Thomas McENtyre, death, Co. Cavan, here is what came back:
https://familysearch.org/search/collection/results?count=20&query=%2Bgivenname%3AThomas~%20%2Bsurname%3AMcEntyre~%20%2Bdeath_place%3ACavan~&collection_id=1408347
You can see what McEntyre?s were still in the area at the turn of the 20th century using the 1901/11 census records:
http://www.census.nationalarchives.ie/search/
Perhaps you could try using a local phone book to see if there are any McEntyres listed in the area today. You should be able to find one online, however please note that a lot of people choose to be unlisted in these.
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
The National Archives UK ? genealogy search: http://www.nationalarchives.gov.uk/records/looking-for-person/
The Public Records Office of Northern Ireland http://www.proni.gov.uk/index/family_history.htm
Irish Times: http://www.irishtimes.com/ancestor/index.htm
Irish Genealogy Tool kit: http://www.irish-genealogy-toolkit.com/
Genealogy Links: http://www.genealogylinks.net/uk/ireland/cavan/index.html
From Ireland: www.from-ireland.net
Alternatively,you could contact Cavan Genealogy Centre for some assistance, please note that a fee may apply: cavangenealogy@eircom.net
Kind regards,
Genealogy Support