I had a look at the 1911 Dublin Census, and found a Moore family at Graves Cottages.
The head of the house was Margaret, a widow, aged 40.
The eldest was Thomas aged 23, but he was a general labourer.
Youngest was Stephen, aged 5.
It should come up in the search if you enter Graves Cottages in the street section, and Margaret Moore aged 40.www.census.nationalarchives.ie