 In 2010, multimillionaire John du Pont died in prison serving his sentence for murder; du Pont's most recent will had bequeathed 80 percent of his estate to Yordanov, his wife, Zdravka Moneta Atanosova Dimitrov, and their relatives.Du Pont had been a Forbes 400 member worth an estimated US$200 million in 1986, about $ in current dollars.The Superior Court of Pennsylvania upheld a Delaware County Orphans Court order dismissing a challenge to the will from du Pont's family.