Board Thread:Wiki Discussions/@comment-24924275-20140530195653/@comment-28861328-20140607050204

Kishimoto named them after one of the most ancient tales in Japanese mythology. I highly doubt these clans were even considered by him when he made their names. The kanji may be the same, but if the Kanji for Rasengan and some other wildly unrelated technique matched each other, that doesn't secretly mean their connected.