The first book in Susan Howatch's Starbridge series, Glittering Images, carries a quotation from Henson's letters at the beginning of each chapter.
Joan is also a principal character in The Wheel of Fortune by Susan Howatch, a novel that takes the characters of the Plantagenet family and recreates them in a modern dimension of the Godwin family of Oxmoon (the throne), where she appears as Ginevra (Ginette).
As is made clear by the chapter headings, the fortunes of the family closely parallel the Plantagenet family, including Henry II of England and Eleanor of Aquitaine, with the mansion representing the throne.
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