The debate here is interesting. In my recent book (Memoire) on the Nigeria / Biafra War, I theorized about this, without even knowing that there are other Isu communities besides Isuochi, Isu Njaba and Isu-Ikwu-ato. I am fully aware that Ikwere people refer to all other Igbos as Isuama and so do Owerre people. Nevertheless, my theory of the meaning of Isu that differentiates between people that claim to be original and immigrant is correct. However, I am curious about Ifite and Ezi. I thought that Ezi na Ihite (Ifite, or Ivite or Ibite) refer to East and West. Maybe we should study the geographical locations of these communities that are referred to as such. If they are not consistent geographical locations, then the Ezi and Ifite as referred to here are correct. I am only curious as to why originals should refer to themselves as Ihite and immigrants as Ezi. In any event, Isu consistently refer to the outsider or invader or barbarian as ancient Greeks would make it.