Chap from Armagh (6)
I believe the answer is:
graham
'chap' is the definition.
'from armagh' is the wordplay.
'from' is an anagram indicator (from the letters).
'armagh' is an anagram of 'GRAHAM'.
(Other definitions for graham that I've seen before include "Alexander -- Bell, US inventor" , "town in South Africa takes the > biscuits" , "Alexander - Bell, Scottish-born inventor" , "- Greene, Br. author" , "Novelist, who wrote..." .)