Board Thread:Wiki Discussions/@comment-1512913-20140521221412/@comment-28861328-20140522194651

HagoromoOtsutsuki wrote: Hagoromo is the first (along with his brother to have rinnegan) Shinju been in the narutoverse for centuries Byakugan is the 1st true dojutsu among sharingan+rinnegan

All of that is speculation.