Home of the Blue Devils (4)
I believe the answer is:
duke
'home of the blue devils' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for duke that I've seen before include "Highest hereditary title in Britain" , "Highest rank of British peer" , "noble" , "High hereditary title in Britain" , "Nobleman of the highest rank" .)