Right, well, confirmed sightings in Dublin are:
The Porterhouse, 16-18 Parliament Street, D2
Porterhouse Central, 45-47 Nassau St , D2
Porterhouse North, Cross Guns Bridge, Glasnevin, D9
Messrs Maguire, 1-2 Burgh Quay, D2
The Gingerman, 39-40 Fenian Street, D2
The Bull & Castle, Christ Church, D2
Ely CHQ, Custom House Quay, D1
Galway Hooker is due to arrive soon at Dice Bar (78 Queen Street, D7) and Sin É (14-15 Ormond Quay, D1), but I don't think that's happened yet.
I'm missing non-Porterhouse pubs that sell Temple Brau. I think The Temple Bar (48 Temple Bar, D2) is one, but I'm not sure.
Solas (31 Wexford Street, D2) has a tap marked "Solas Lite": anyone know what this is? The name doesn't sound too promising.
For Wicklow, the list starts with:
The Porterhouse, Strand Road Bray.
It may well end there...