I never heard of the author, either. I simply googled EMWUNNUHWJSN VWUAENEWX and liked the quote. I studied it a minute and realized that EW EV would give away WR which in turn would give RJA BRVW. Heck, with five words for free, I figured it would not be too difficult.
THe letter pattern of the two words after the comma got me started.
At first I thought I had guessed wrong but then I thought better of it...