Board Thread:Naruto Discussions/@comment-28861328-20140618060932/@comment-28861328-20140618070730

Everreddie wrote: Shouldn't Hamura be the ancestor of the Uzumaki clan? Since the Uzumaki clan are distant blood relatives of the Senju clan (like cousins), wouldn't it make sense for Hamura to be the ancestor of the Uzumaki clan?

No. That wouldn't even make them distant cousins. This doesn't work like actual family genetics, where your brother's descendants become your cousins. The Uzumaki are directly related to the Senju (meaning there was likely a fork-off in Asura's bloodline), making them Hagoromo's descendants.

Also, Hagoromo had the Uzumaki's trademark red hair and astonishing vitality.