The most common and most likely answer to this crossword clue is the 10 letter word NORTHERNER
I've seen this crossword clue in The Daily Telegraph
N
O
R
T
H
E
R
N
E
R
More clues leading to the result NORTHERNER
Buddy explains!

The straight part
We know that "Dalesman, perhaps" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dalesman, perhaps = northerner.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.
What does NORTHERNER mean?
NORTHERNER noun- A native or inhabitant of the north of a region (or of the world as a whole), such as one of the northern United States, the north of Norway, etc.