As of Jun of 2010 those individuals searching for their Jewish ancestors in Ireland have been given a gift. The 1901 and 1911 censuses of Ireland are now available free online at http://www.census.nationalarchives.ie/. All counties are included. Up until this time the census of 1911 was the only one included here. This site will be most benefical for anyone looking for their ancestors in turn of the century Ireland.
Even though, the record above is taken from the microfilm collection of The Family History Library in Salt Lake City, Utah, it is easy to see what wonderful information is available.