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A Newport, R.I., home built by Campbell Soup heiress Dorrance Hill Hamilton is going on the market for $12.5 million.
Known as “Dodo” to friends and family, Ms. Hamilton built the home five years ago because she needed a living space with no stairs, said her son Matt Hamilton, 63, a retired travel executive. Ms. Hamilton died in April at the age of 88.
Built in 2012, the six-bedroom, nearly 10,000-square-foot house is…