Board Thread:Naruto Discussions/@comment-25219329-20140724234432/@comment-1210805-20140725085417

Edward Zachary Sunrose wrote: but he's more Namikaze than Uzumaki. What? He's equal parts Namikaze and Uzumaki.

You're also assuming that the Namikaze name comes from a ninja clan. It could come from anywhere. There are plenty of family names that haven't been shown to be connected to a clan.