Board Thread:Naruto Discussions/@comment-30168130-20170109030621/@comment-734582-20170113110308

Namikazenaruto9 wrote: This is definitely not true as the sage was said to have several disciples Naruto is an Uzumaki yet a transmigrant. Transmigrant only seem to come from direct bloodlines to Ashura. Even if they come from Senju they trace back to Ashura via the Senju.

So they definitely share a bloodline with Ashura.

Lorenzo.r.1st wrote: well, obviously the clans and bloodlines spread across the world, but I just wanted to know if the uzumaki came from the senju, or if they both came from asura. from what u guys said, it seems that the latter is "more true" so im gonna go with that one. The only true answer is that we don't know. We don't know enough about Ashura's era to know how clans split etc. It's possible that the Senju are the direct remains of Ashura's clan, and so everything else can be considered to come from them. It's possible Ashura's clan fragmented so much that no true successor clan can be appointed, and that the Senju arrive to the theatre later. It's possible the Uzumaki were formed from a son of Ashura, which would make them related to the Senju but not actually from the senju.

So TLDR: We don't know.