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Claudia Kaufman is the daughter of Katherine and George Kaufman, the sister of Samantha and Deborah Kaufman, the sister-in-law of Roderigo Messina, the aunt of Juliet Messina, the wife of Thomas Regan, the mother of Helen Regan, the mother-in-law of Ben Kelerick, and the grandmother of Edmund, Orlando, Regan, Duncan and Cordelia Kelerick.