The setup seems perfect for a novel: a tony New England family with seven children, living in a mansion by the sea; a mother who dies in a car crash; a father’s descent into alcoholism and eventual death from cancer; and the various sufferings and melodramas of the children who must go through life contending with each other and their family history. But the Minot family is no fictional invention. The seven children do indeed exist, and no fewer than three of them have now published supposedly fictional books based heavily on their own lives. The latest to publish is George Minot, spinning a dark tale of murder and alcoholism, and, as has become a habit with the Minots, some of the author’s siblings are furious.