English architect Jones (5)
I believe the answer is:
'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" .)