Erzya people (unofficial)

The Erzyans are the other major Mordvin group, and they also have an unofficial flag, first reported around 2001. It’s a plain tricolour of white (for freedom), red (for life), and black (for earth).

I should say just as a disclaimer that I found both of these flags in the deep reaches of in the internet, on pages that I could only half-understand through the foggy lens of Google translate. It’s not at all clear how widely accepted either of them are, and it’s quite possible that they have some political dimension I’m not aware of.