Conversation so far:
How was Luke Skywalker created?
Luke Skywalker was variously conceived of as a 60-year-old grizzled war hero, later as a Jedi Master, and as a woman.
Who created Luke Skywalker?
Luke Skywalker is a fictional character and the main protagonist of the original film trilogy of the Star Wars franchise created by George Lucas.

Question: What year was he created?
Self-contained rewrite: What year was Luke Skywalker created?