The new online Irish site for Census archives has just been put up, it is at:
http://www.census.nationalarchives.ie/
Some comments is that Ma’s father Edward did not die untill 16-12-1912, so he must have been at sea when the census was taken. The family lived at 55 Cross Avenue at that time and they lived as peripatetic life as the James Joyce family.
The link is at:
http://www.census.nationalarchives.ie/pages/1911/Dublin/Kingstown_No__3/Cross_Avenue/91290/
There are PDF images to down load on the pages, I will create a category for them and load them up to this site in time.
At 14 Cadogan Road at that time lived “the Captain”, his wife Margaret and an “Ellen O’Connor” aged 36. See the details at:
http://www.census.nationalarchives.ie/pages/1911/Dublin/Clontarf_West__Part_of/Cadogan_Road/19938/