S. Robson Walton
Net Worth: US$33.3 billion
Position: Chairman, Wal-Mart Stores
Age: 69
Source of Wealth: Wal-Mart, inherited
Residence: Bentonville, AR
Country of Citizenship: United States
Education: Doctor of Jurisprudence, Columbia University; Bachelor of Arts / Science, University of Arkansas
Marital Status: Married
Children: 3
Forbes 400 ranking in 2012: No. 9