The Navajos also have a strong clan system. Of course its matriarchal. They pay close attention to clan relationships and won't even date anyone from the same clan as their parents.

They have a term I like a lot, "cousin-brother" to describe someone from the same clan.

I think it fits well for this board. A lot of cousin-brothers here.

Navajos suffered much as the Scots did - overrun by a stronger power, prohibited from speaking their language and practicing their traditional beliefs.