Wendy's - Melinda Thomas of Dublin, OH (near Columbus) was nicknamed Wendy growing up. When her father Dave Thomas started his hamburger chain he chose his daughter's nickname. At that time she was eight years old.
Coca-Cola - John Pemberton, an Atlanta, Georgia pharmacist created the original soft drink. His bookkeeper Frank Robinson named the beverage according to its two main ingredients, which were coca from coca leaves and kola from kola nuts.
Apple - Apple founders Steve Jobs and Steve Wozniak named their computer company after a record label they both liked.
Honda - The popular auto company was named after its founder Soichiro Honda when he started the company after WWII...however at that time Honda was a motorcycle company only. It was not until Honda entered the U.S. in the 1960s that it started manufacturing automobiles.
Mickey Mouse - Back when Walt Disney was first starting out in his art career he had developed the classic concept for Mickey Mouse. The original name he wanted was Mortimer Mouse but his wife Lillian convinced him to use Mickey instead. In 1928 when Mickey debuted in his first film, a star was born.
Banana Republic - The safari-inspired attire that began in 1978 and has grown into a luxury career brand as well as an upscale casual retailer today derived its name from an uncomplimentary term used to describe an unstable Latin American country.
There are so many good examples. You may see similar posts in the future.