The story I'm about to tell you is 100% true. It's also pathetic IMO. I once was told by a Commanders fan that their team name is derived from a "type of peanut that grows only in the area of the Nation's capital, and has nothing to do with a slight of Native Americans."
He was dead serious.
First of all, a simple research of peanuts will show you that there is no "Commander peanut." At least not that I have found, and "grows only in that area?" Forgive me, but where are the big peanut farms in Maryland or Virginia?
Second let's talk about the peanut logo on the side of the helmet. 
Third, before they moved to the District of Columbia in 1937, they were stationed in Boston as the Braves. Is there a Braves peanut that only grows in Massachusetts?
Fourth, apparently this guy and anyone who buys his rubbish have never heard of a study called etymology which discusses the origins of words. If you look up Commander it confirms it is meant as a derogatory slur of a Native Americans. Nothing about peanuts.
Finally, the most famous racist in the History of the NFL was owner of the Commanders, George Preston Marshall. Not only did he convince the other owners to bar Blacks from playing in 1934, in 1946 when the other owners changed their ways and allowed Blacks to play he still did not. It wasn't until 1962 when the Kennedy Presidency sent Stewart Udall to confront Marshall. They had to threaten to revoke his 30 year lease on DC Stadium, better known as RFK, which was paid for by government money. Uh, that means your taxes folks.
Yeah, it's about a peanut.
Peanut logo................
