Banner includes queen (4)
I believe the answer is:
anne
'queen' is the definition.
(Queen Anne, 18th-century queen)
'banner includes' is the wordplay.
'includes' says the answer is hidden in the clue.
'ANNE' is hidden in the letters of 'banner'.
(Other definitions for anne that I've seen before include "She married Shakespeare" , "Boleyn or Hathaway, say" , "British queen" , "Shakespeare's wife's name" , "'---- of Green Gables', novel by Lucy Maud Montgomery" .)