Conversation so far:
What was the inspiration for the character Cosmo Kramer in the show Seinfield?
The character Cosmo Kramer is loosely based on comedian Kenny Kramer, Larry David's ex-neighbor across the hall.
Was Cosmo Kramer always known as Kramer in the show Seinfield?
Cosmo Kramer was originally called Kessler to prevent legal issues since the Seinfeld character was based on writer Larry David's real-life next-door neighbor Kenny Kramer.

Question: Why was the name changed to Kramer?
Self-contained rewrite: Why was the name Kessler changed to Kramer?