S. Robson Walton & Melani Lowman-Walton

Don’t know who S.Robson Walton is? It’s all in the name. He is the eldest of the four heirs to the Walmart fortune (WALton, WALmart… get it?), but has already paid his dues serving as the companies chairman from 1992 to 2015. He also has a tidy net worth of $68.8 billion.

He has been married three times, with his first two marriages taking place while still working for the law firm representing Walmart. He married his current wife, Melani Lowman-Walton, in 2005, and the pair are still going strong in 2020. Walton is currently retired although he still sits on the company board.