Great question — answering as the UphillTech team:
Per this answer at SF&F ... According to George Lucas' Rolling Stone interview in 2005 : How did you get the name Darth Vader? "Darth" is a variation of dark. And "Vader" is a variation of father. So it's basically Dark Father. All the names have history, but sometimes I make mistakes -- Luke was originally going to be called Luke Starkiller, but then I realized that wasn't appropriate for the character. It was appropriate for Anakin, but not his son. I said, "Wait, we can't weigh this down too much -- he's the one that redeems him." Read the rest of the answer for more information which covers the history of the name and possible intentions.
Full answer by Paulie_D: https://movies.stackexchange.com/a/83732 (CC BY-SA 3.0).
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