Simplify the following text for a Grade 8 native English-speaking person.
Original: Samuel Moore `` Sam '' Walton ( March 29 , 1918 -- April 5 , 1992 ) was a businessman and entrepreneur born in Kingfisher , Oklahoma best known for founding the retailers Wal-Mart and Sam 's Club .
Simplified: He was born on March 29 , 1918 near Kingfisher , Oklahoma . Walton is the person who created the well-known American stores , Wal-Mart and Sam 's Club .