No matter how improbable the incidents recounted in the movie "Mad Love" or "Juana la Loca" (the initiation of the marriage, the shearing, the parto behind the curtains in the retrete, drinking cold water as the attributed proximate cause of death, etc., etc.), they all appear in accounts of Felipe el hermoso and Juana. The movie subtitles call her "Joan the Mad," but I've always known her as Joanna the Mad and even think there's been an opera at sometime based on her life. Alibris finds a historical novel from the 'fifties called "The Prisoner of Tordesillas." Apparently Juana of Castile is the non-loca name by which she's known.