He died in 2010 and left his billion fortune to his four children in equal shares.
They are now worth at least double that 1: The Waltons: The richest family not only in America but the world, the Waltons still own more than 50 percent of Wal-Mart Stores, the firm their father, Sam Walton, founded in Bentonville, Arkansas in 1962.
From the Kennedys to the Kochs to the Waltons, the list is made up of 185 families, some famed for their historic and dynastic wealth, while others are simply American success stories and have only relatively recently become fabulously rich.
The staggering collective wealth of the 185 richest families in the United States is $1.2 trillion dollars and all the names on the list reveal at least some link to either industrial heydays long gone like the Rockefellers or successful brands still in operation such as Hallmark, Budweiser, Mars and Getty Oil.
Worth an incredible $152 billion, which is $63 billion more than the second richest family, the controversial Koch brothers, the Walton family is three living children of Wal-Mart Stores founder Sam Walton, and includes the wife of son John and the two daughters of his brother and business partner James Walton.
Jacqueline Badger Mars, pictured in 2012 at a gala In Washington D. is part of the famed confectionary family who are worth $60 billion while (right) is W. Cargill, the son of a Scottish sea captain, who started Cargill, the largest private company in America, making six family members individual billionaires and as a family worth $43 billion 5th wealthiest family: Abigail Johnson, president of Fidelity Investments' mutual fund division, is pictured in Boston in this February 2002 photo: The asset management firm is altogether worth $39 billion Iconic: William Randolph Hearst Jr., (lright) with his wife return from their honeymoon with a friend.
Their brother John died in an aircrash in 2005 and at the time of his death was worth $18.3 billion sales.
The company was founded in 1927 when their father developed a way to convert heavy oil in gasoline.
After his death in 1967, Charles took over what was then called the Wood River Oil and Refining Company and renamed the firm. Koch joined the company in 1970 and became president in 1978.
Forbes have published a list which names the publishing giants family as the 6th richest in the nation worth, billion The state with the second highest total wealth is Arkansas with 8 billion, but that comes from only three families, the Waltons, with 2 billion, the Stephens with billion and the Tysons with .8 billion. Cox (right) purchased the Dayton Evening News in 1898.
Today the company he started includes Cox Communications and Auto Trader Group.