No. Bobby popularized it, but I believe it was Pal Benko who invented it. I could google it I suppose, but it's your thread and I don't, if truth be known, really care.
Comments About Chess Variations
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That's what I found in a book. I had hoped that it's not false information. I guess I was wrong.
It came up during the recent 960 match between Magnus and Hikaru. I think that's where I heard it. Anyway Yasser Seriwan was commentating and that's what he said. No independent verification on my part because as I said, I don't really care....I'm just bored and can't sleep. 
There have also been other variations of chess other than the ones chess.com have. Examples are : 3D Chess, Atomic Chess, Hexagonal chess, blindfold chess, Capablanca chess, and more. My favorite out of all of them are Atomic chess.
There's a lot of chess variations out there. I know a lot of them and a lot about them. Here's a trivia question about Chess960 :
Which famous chess player "invented" Chess960?
Bobby Fischer. This is why Chess960 is also called Fischerandom chess.