Scifi author Bruce Sterling amusingly describes himself in his bio here on Medium as 'One of the better-known Bruce Sterlings'.

I was always confused back in the day by John Williams, classical concert guitarist, and John Williams the film soundtrack composer.

Really sneaky that just as JW1 was playing the theme tune for The Deer Hunter, JW2 had Star Wars in cinemas.

"Hi, I'm John Williams - purveyor of music to landmark 70s movies."

"Oh, that John Williams. But which one?"