Board Thread:Naruto Discussions/@comment-26127155-20150326052215/@comment-26275777-20150528234723

The point is that there was already an Ootsutsuki clan before Hagoromo and Hamura were even born, or how would she have the name? What would she be a princess of? She was the leader of the clan, so obviously she was leading *someone*.

As for the Byakugan needing chakra, maybe it started out as a mutation that was killing their clan, or they had the eyes but they couldn't work. So she went to eat the chakra fruit to awaken their power, or something.