Agnes & her family appear to be listed in the 1901 census. This link is to the page for their family:http://www.census.nationalarchives.ie/reels/nai001264613/
The 1901 and 1911 censuses are both available at:http://www.census.nationalarchives.ie/
Sorry if you have this already, but as it has other family members' name I think you don't. The same family is listed in the 1911 census, also at the National Archves site.