English architect Jones (5)
I believe the answer is:
inigo
'english architect jones' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for inigo that I've seen before include "one of the Joneses" , "- Jones, Eng. architect" , "Jones the (C17) architect" , "-- Jones, C16-17 English architect" , "___ Jones, English architect and stage designer" .)