Graham is wandering in part of Northern Ireland (6)
I believe the answer is:
armagh
'part of northern ireland' is the definition.
The definition suggests a singular noun which matches the answer.
'graham is wandering' is the wordplay.
'is wandering' indicates anagramming the letters.
'graham' with letters rearranged gives 'ARMAGH'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for armagh that I've seen before include "County of N. Ireland" , "Seat of Archbishop of All Ireland" , "Town where all-Ireland bishopric is located" , "Irish county for Graham" , "Ulster county" .)