The most common and most likely answer to this crossword clue is the 8 letter word LEINSTER
I've seen this crossword clue in The Sunday Telegraph
L
E
I
N
S
T
E
R
More clues leading to the result LEINSTER
- Fifteen from Ireland — some settle in sterling
- Boss has institution for publicity in part of Ireland
- Tranche of boodle in sterling for Irish quarter?
- Irish province’s city requiring name for church
- Tin reels sorted in province
- Smirk when taking in this month in Ireland
- Re-enlist in irregular formation in part of Ireland
- Sample of fiddle, in stereo, found here in Ireland
- Dublin location to have a sly look around this month
- Pearson gaining in province
Buddy explains!

The straight part
We know that "part of Ireland" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case part of ireland = leinster.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.