Yes, it's pure Inchicore!
The GSWR operated Wexford - Rosslare locals.
It's after 1918 as the engine is in plain grey. Prior to that it would be very obviously lined (and black) as the GSWR made sure engines were clean.
It was one of sixteen built between 1879 and 1884 (this one 1886). They were class E3. Most were scrapped in the 1930s but this was one of a trio which survived as the last examples to 1945. They were initially used on branches in the south and south-west, and were very much associated with Cork, Waterford and that area.
Wexford - Rosslare locals, and possibly Rosslare - Waterford. If the picture is after 1925, I am sure they put in appearances on the North Wexford line from time to time. Cork suburban services had them too - they worked Youghal and Cobh trains too.