Here's some info on the names of some of the characters:
R2D2 - I guess everybody knows this one refers to a dialogue between Lucas and an editor, when Goerge asked for a bit of dialogue that was on another reel. The edit said, "oh, you mean R2D2?", referring to Reel #2, Dialogue "2. That's how he got his name.
Obi-Wan Kenobi - Obi-Wan is taken from the term "OB Van", a tv or film production truck with the main recording and producing facilities on board.
Darth Vader - The Dutch may have foreseen the coming of Vader in little Ani, because in Dutch "vader" means father.
Cheers!