"The Favourite” queen (4)
I believe the answer is:
anne
'the favourite queen' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for anne that I've seen before include "First queen of Great Britain and Ireland" , "Henry's second" , "- of Green Gables (children's classic)" , "She married Shakespeare" , "18th century Queen" .)