Dornish nationalism gets a moderate amount of discussion, but are there other regions of the Seven Kingdoms where there is meaningful nationalist/proto-nationalist sentiment? E.g. the North or the Vale, or is it still too bound up with personal loyalties?

I’ve talked a bit about Northern nationalism here and here.

I can see some other sources of proto-nationalist sentiment – the Reach has it’s fixation with chivalry, the Vale has its snobbishness and emphasis on codes of honor, and of course there’s the toxic nationalism of the Iron Islands.