Yes. Why do I say this?
Firstly, parallels are huge in this show.
Hagoromo= senju + uchiha
His bro = uzumaki + hyuga
Plus, I genuinely see absolutely see no reason as to why kishimoto would introduce a brother for the so6p, as I think it is completely irrelevant. What pupeose does he serve? To be a sasuke incarnate ??? There seriouslyisnt much to his character.
I think it's safe to say that the uzumakia nd hyuga came from him.