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Katherine "Kari" OlsenĀ is a sister of Mona Olsen, the maternal aunt of Homer Simpson, the aunt-in-law of Marge Simpson (nee Bouvier), the sister-in-law of Abraham Simpson II, the granddaughter of Jordan Olsen and Linda Olsen, and also the paternal great-aunt of Bart Simpson, Lisa Simpson, and Maggie Simpson.

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