Dismiss English royal house (4)
I believe the answer is:
york
This clue is a double definition.
'dismiss' is the first definition.
(I've seen this before)
'english royal house' is the second definition.
(I've seen this before)
(Other definitions for york that I've seen before include "Archdiocese" , "A place" , "National Railway Museum city" , "Eboracum (on the Ouse)" , "attempt to get out at the Oval" .)