Answer: ruddigore

AnswerCrossword Clue
RUDDIGOREOperetta subtitled "The Witch's Curse"
RUDDIGOREGilbert and Sullivan operetta.
RUDDIGORESir Despard Murgatroyd's castle.
RUDDIGOREGilbert and Sullivan's follow-up to "The Mikado"