Cromwell's bodyguard? (9)
I believe the answer is:
Here is my best explanation:
I believe this is a double definition.
'cromwell's' is the first definition.
(Oliver Cromwell was Lord Protector)
'bodyguard?' is the second definition.
(Other definitions for protector that I've seen before include "Defender", "Box at Lord's say", "Patron" and "Guardian; regent".)