Queen in banner (4)
I believe the answer is:
anne
'queen' is the definition.
(Queen Anne, 18th-century queen)
'in banner' is the wordplay.
'in' indicates a hidden word.
'ANNE' can be found hidden inside 'banner'.
(Other definitions for anne that I've seen before include "'---- of Green Gables', novel by Lucy Maud Montgomery" , "Queen 1702-1714" , "One of Henry VIII's wives" , "- - of Cleves" , "Boleyn or Hathaway, say" .)