Samuel Robson “Rob” Walton (born October 28, 1944) is an American billionaire heir to the fortune of Walmart, the world's largest retailer. He is the eldest son of Helen Walton and Sam Walton, and was chairman of Walmart from 1992 to 2015. As of October 2022, Walton had an estimated net worth of US$61 billion, making him the 18th richest person in the world. He is also the principal owner of the National Football League (NFL)'s Denver Broncos. Early life and family Rob Walton was born on October 28, 1944, in Tulsa, Oklahoma, the oldest of four children of Sam Walton (1918–1992), cofounder of Walmart, and Helen Walton (1919–2007). He has a younger brother, Jim Walton, and a younger sister, Alice Walton. Another brother, John Walton, died in 2005. Walton attended The College of Wooster and graduated from the University of Arkansas in 1966 with a Bachelor of Science degree in business administration, where he was a member of the Lambda Chi Alpha fraternity. He received his juris doctor degree from Columbia Law School in 1969. Walton is also a trustee at The College of Wooster. After graduation, Walton became a member of the law firm that represented Walmart, Conner & Winters in Tulsa, Oklahoma. In 1978, he left Tulsa to join Walmart as a senior vice president, and in 1982, he was appointed vice chairman. He was named chairman of the board of directors on April 7, 1992, two days after his father's death. Along with his siblings, he has pledged about $2 billion to the Walton Family Foundation from 2008 to 2013. On June 7, 2022, an ownership group led by Walton entered into an agreement to purchase the Denver Broncos from the estate of Pat Bowlen for $4.65 billion, which set the record for the most expensive sale of a sports franchise in history, subject to approval from the NFL's finance committee and a 3/4 majority of the full NFL ownership group. Former Secretary of State Condoleezza Rice was announced as added to the ownership group on July 11, 2022. The family then announced on August 2, 2022, that Lewis Hamilton would be added to the ownership group. Walton delegated most day-to-day authority to his son-in-law, Walmart chairman Greg Penner, who took over as CEO of the franchise and the public face of the ownership group. Personal life By the time he left Tulsa in 1978, Walton