[quote=@Letter Bee]
[@Willy Vereb], they're language groups.
[/quote]But why make claims on the culture of nations the said players should have no control over?
That doesn't seem to make sense to me.
For the record Yllendthyr has its own language and elvish is kind of mandatory for their human subjects, as well.

EDIT: Basically such are often handled organically in other NRPs, usually through discord chat to make closer relations between nations.
On the other hand "D'oh". I was caught skimming over the last two paragraphs which does explain this culture/language line.

BTW, I think it's easily plausible that the humans inhabiting my continental holdings were natives of that language/cultural group but since then elvish rule is slowly changing it.