Barbara Piasecka Johnson—an immigrant maid who married an heir to the Johnson & Johnson fortune and later set off a well-publcizied public battle for his estate—has died at the age of 76 in her native land of Poland. Having been hired by the second wife of J. Seward Johnson Sr. as cook and maid, Ms. Piasecka eventually married Mr. Johnson, who had set up her in a New York City apartment and was 42 years her senior. The pair was married for a dozen years and had built a palatial estate ...