Sparky:
Welcome to Ireland Reaching Out!
Looks like there were at least six children: Bridget 1878 Thomas 1880 John 1883 Mary 1885 Patrick 1888 Edward 1893. The couple married August 6, 1874 at Tullow RC parish. The father of Patrick was Patrick but the Roots record did not show the Dwyer father. Civil records for the births can be found at www.irishgenealogy.ie
Here is the 1901 census record. I did not see the family in the 1911 census but did not search extensively.
http://www.census.nationalarchives.ie/pages/1901/Carlow/Tullow/The_Cour…
Roger McDonnell