Back Again.
I've read through all the entries on the image of the church register page on which the record of James Hanley's baptism is;
http://churchrecords.irishgenealogy.ie/churchrecords/details/3db1b50031073All of the entries have addresses on the northside in and around Santry, Drumcondra, Fairview, Donnycarney and so on.
I think these records may have been mistakenly attributed to St Andrews and may actually refer to Fairview RC. St Andrews is on the south side of the city but all of the addresses on this page are northside and all within what was probably the catchment area for Fairview RC. I know that in the late 1800's Fairview RC parish covered a large area of mostly rural north city. It certainly covered parts of Glasnevin, Drumcondra, Clontarf and at least as far as Whitehall at that time and so may well have extended to parts of Santry and Coolock.
While Holles St Maternity Hospital is within St Andrews parish The Rotunda hospital on the northside would have been far nearer and more convenient for northsiders. So, on balance, I doubt these records actually do refer to St Andrews or have anything to do with Holles St.
This probably suggests that "The Tap" wherever it is, or was, was within the catchment area of Fairview RC. Although that doesn't narrow it down much.
Gone again
Phil