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In page Maria Theresa of Austria-Este, Queen of Sardinia:

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Maria Theresa survived Victor Emmanuel by eight years. She was accused of having tried to convince her childless brother-in-law Charles Felix to assign Francis IV, Duke of Modena (her brother and the husband of her eldest daughter Maria Beatrice), as heir to the throne.[2] Due to the hostility directed toward her, she was not allowed to return to Turin until 1831. She was buried in the Basilica of Superga.[citation needed]