Question: Samuel Robson "Rob" Walton, born on which date, is an American businessman and is the eldest son of Helen Robson Kemper Walton, the wife of Wal-Mart founder Sam Walton, the world's largest retailer?

Context paragraphs:
Jim Walton: James Carr Walton (born June 7, 1948) is the youngest son of Sam Walton, the founder of the world's largest retailer, Walmart.  On the 2016 Forbes list of world billionaires, Jim Walton was ranked as #15 with a net worth of $33.6 billion.

Alice Walton: Alice Louise Walton (born October 7, 1949) is an American heiress to the fortune of Wal-Mart Stores, Inc. She is the daughter of Wal-Mart founder Sam Walton and Helen Walton, and sister of S. Robson Walton, Jim Walton and the late John T. Walton.  With a net worth of $40.8 billion she is the wealthiest woman in the world, according to "Forbes", following the death of Liliane Bettencourt in September 2017.

Walton family: The Walton family is an American family whose collective fortune makes them among the richest families in the world.  The majority of their wealth derives from the heritage of Bud and Sam Walton, who were the co-founders of the world's largest retailer, Walmart.  The three most prominent living members (Jim, Rob and Alice) have consistently been in the top ten of the "Forbes" 400 since 2001, as were John ( 2005) and Helen (d. 2007) prior to their deaths.  Christy Walton took her husband John's place after his death.

Audrey J. Walton Stadium (Columbia, Missouri): Audrey J. Walton Stadium on the campus of the University of Missouri is the home of the Missouri Tigers track and field teams and the Missouri Relays track and field meet.  Audrey J. Walton, the namesake of the Stadium, was married to Sam Walton's brother, Bud Walton.  Sam Walton is the founder of Wal-Mart and an alumnus of the University.  The stadium has a seating capacity of 2,500 and is also the home of the men's and women's soccer teams at the University of Missouri.

Sybil Robson Orr: Sybil Ann Robson Orr is an American film producer.  She is a niece of Walmart founder Sam Walton and Helen Walton, and the founder of Robson Orr Entertainment.

Helen Walton: Helen Robson Kemper Walton (December 3, 1919 – April 19, 2007) was the wife of Wal-Mart and Sam's Club founder Sam Walton.  At one point in her life, she was the richest American and the eleventh-richest woman in the world.

Ann Walton Kroenke: Ann Walton Kroenke (born December 18, 1948) is an heiress to the Wal-Mart fortune.  Kroenke and her sister, Nancy Walton Laurie, inherited stock from her father, Bud Walton (died 1995), who was brother and an early business partner of Wal-Mart founder Sam Walton.

Roy Vernon Scott: Roy Vernon Scott (born December 26, 1927) is a Professor Emeritus of history at Mississippi State University in Starkville, Mississippi, who specialized in agricultural and railroad studies in the American South and Midwest.  In 1997, he co-authored "Wal-Mart: A History of Sam Walton's Retail Phenomenon", a study of Sam Walton's Wal-Mart retail giant.

S. Robson Walton: Samuel Robson "Rob" Walton (born October 28, 1944) is an American businessman and is the eldest son of Helen Walton and Sam Walton, founder of Walmart, the world's largest retailer.  He served as Chairman of Walmart from 1992 to 2015.  In October 2012, Walton was listed as the 11th richest person in the world.

Greg Penner: Gregory B. "Greg" Penner (born 18 December 1969) is an American businessman and venture capitalist.  Penner was named the chairman of Walmart on June 5, 2015.  He is the son-in-law of S. Robson Walton and the grandson-in-law of Sam Walton, the founder of Walmart.

Supporting paragraphs: S. Robson Walton Helen Walton
Answer: October 28, 1944