Board Thread:Theories and Speculation/@comment-3965545-20160511191323/@comment-1512913-20160512194739

@Omni, as stated above, Obito said something like: "Sasuke and Naruto.... Uchiha and Senju" so if that's to be taken at face value, that's besides the Nagato statement by BZ two sources implying that the Uzumaki are a branch from Senju.