S. medical schools. "This court concludes that the evidence submitted by the executors sufficiently rebuts the presumption of legitimacy and provides clear and convincing proof that the decedent is not the father," she said. Daniel Ludwig, fearful that Patricia would seek part of his fortune when he died, had blood samples frozen in the 1970s for genetic testing later. He died in 1992 at 95. "He had the foresight to do it because he anticipated that she would try to attack his will," said Charles Gibbs, the lawyer for Ludwig's estate. Ludwig, who at his peak had 60 ocean-going vessels, spent more than a half-century denying he was Patricia's father. His estate produced four letters written by Gladys in which she told Ludwig that Patricia was not his daughter, though she said she had told her family otherwise. Reached at her Connecticut home, Patricia, 59, declined to comment. Patricia had submitted letters from her mother that said Daniel Ludwig was the father. Patricia's lawyers questioned the validity of the genetic tests used to establish paternity. Ludwig's wealth, once set at $2 billion, declined after business losses in the 1980s when a bank he had invested in failed. He also lost money on a controversial venture to develop a sizable chunk of the Brazilian Amazon for forestry, mining and farming. His executor, R. Palmer Baker Jr., said the tycoon also gave a major chunk of his wealth to establish a cancer research institute in the early 1970s.