An ecclesiastic residing near Machu Picchu, for example (6)
I believe the answer is:
andean
'residing near machu picchu for example' is the definition.
(someone from the Andes mountains)
'an ecclesiastic' is the wordplay.
'ecclesiastic' becomes 'dean'.
'an'+'dean'='ANDEAN'
(Other definitions for andean that I've seen before include "Relating to South American mountains" , "Peak District" , "coming from a range" , "description of range?" , "within range?" .)