English dynasty (5)
I believe the answer is:
tudor
'english dynasty' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for tudor that I've seen before include "Royal house of Henry VIII" , "Name of the English royal family of Elizabeth 1st" , "Style of architecture in 15th c. England" , "Elizabeth I of England was of this royal family" , "Dynasty's founder" .)