Thoms Street Directory 1922 and 1937 show Daniel O'Brien in no 15 Josephine Ave.
He's gone by 1941.
I've not been in the National Archive recently, but some years ago I looked at Voters lists from 1928 -32. From scribbles I made at the time, these are the earliest city ones, though there are earlier ones for the county. At the time these books had to be ordered a day in advance, and were a pain to search through!
The Gilbert library has a searchable database from 1937-64 with gaps.
regards eadaoin