What do You think about A Midsummer Tempest (1984)?
Here's a fantastical Shakespearean romp, in a universe where what the Bard wrote was literally true. In the early 17th century, Prince Rupert fights for King Charles against the Puritans; when he's captured, he is unexpectedly aided by his captor's niece and, more unexpectedly, by the fairy monarchs Oberon and Titania, who direct him to Prospero's island. Anderson's language is wonderful, and if you read closely, there are poetic surprises in the narrative and in the dialogue. This is a very enjoyable romp with engaging characters and lovely writing - I liked it very much.
—Margaret