Darth Vader = (Dark) Weather (Swedish) I’m not sure about the roots of Darth, but it looks like a variation of Dark.
Han Solo = He Alone (Swedish/Spanish)
Luke Skywalker = English, duh.
Ben Obiwan Kenobi = Been (as in a has-been) … Cannot be
Obiwan is probably OB1, the same sort of play on letter and number sounds and 3Po/Threpio or R2/Artoo.
Obviously George Lucas stopped this naming system. Earth common names like Leia disappear from the rest of the movie.