The National Archives of Ireland (www.nationalarchives.ie) has
a new catalogue up and running, and has uploaded probate calendars for
the south from 1923-1982. The original version of the catalogue was
virtually impossible to use, however, this has now been amended and
works beautifully. As such, the previous user guide I had created on
this page has now been removed, as there is thankfully no longer a need
for it! To access the catalogue visit https://www.nationalarchives.ie/search-the-online-catalogue/simple/#!/.
The annual summaries of wills are known as the Calendar of grants of probate of wills and letters of administration made in the Principal Registry and its district registries, with each year's entries looking something like the following:
Although the catalogue now works, it may still be easier to access them via the following direct links to the PDF files, as follows:
1923 1924 http://tinyurl.com/ireland1924
1956 (A-K only) http://tinyurl.com/1956-Ireland
By the way, each of the files is fairly large - I have downloaded them all, and the size in total is 3.21GB. Once a calendar entry has been identified, use the application form at the bottom of this page https://www.nationalarchives.ie/wp-content/uploads/2017/09/Testamentary-copy-order-form.pdf - but bear in mind you can't pay online for the copy of the will or letter of adminstration, sadly.
For the probate calendars for all Ireland from 1858-1922, visit www.genealogy.nationalarchives.ie or https://familysearch.org/search/collection/1921305
Please note that the equivalent probate calendars for the district probate registries covering the counties of Northern Ireland, both before and after partition, from 1858-1965 are also available in database format at https://www.nidirect.gov.uk/information-and-services/search-archives-online/will-calendars.