The O'Henry candy bar was created by the Williamson Candy Company in 1920.
The company was Mars.
Baby Ruth. (Google it)
The Baby Ruth Candy Bar was named after President Grover Cleveland's daughter, Ruth Cleveland according to claims by the Curtiss Candy Company. Legend has it that the Oh Henry! Candy Bar was named for a boy who used to flirt with the girls at the Williamson Candy Company.
A candy bar that is named after a red planet is the Mars bar. The company also has a candy bar called the Milky Way.
The Hershey Company
They are named after the company that makes them, Mars Incorporated.
The butterfinger candy bar was created in 1923 by the Curtiss candy company Thanks for asking and god bless!
The name of the candy bar was Baby Ruth. Baby Ruth candy bar was created and owned by Curtiss Candy Company in 1921, Nabisco bought it in 1981 from Curtiss and sold it to Nestle' in 1990.
Hershey's
Mars
I can't imagine any company naming a candy bar after an Indian burial ground, but if I had to guess, it would be Peter Paul Mounds Candy Bar.