The most common and most likely answer to this crossword clue is the 5 letter word SLIGO
I've seen this crossword clue in Financial Times
S
L
I
G
O
More clues leading to the result SLIGO
- Lose weight? Finish off attempt in Irish county
- Sneaky-sounding attempt to find a place in Ireland
- Government blocking paintings going up in Irish town
- County fielder endlessly on move
- Paintings put up around grand Irish town
- County‘s southern dialect, not northern
- Southern language, not northern, found in county
- Cut short travel in area of republic
- Extremely sorrowful, I leave Irish port
- Surreptitious activity reported in Irish county town
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.