@pneumaculturist@linguistics definitely a flavour thing (the character I'm mostly thinking of would be Nanny Ogg, a country witch).
As for the common "family member" usage, which also @anathema_device confirmed, that's what I assumed initially but I'm really pretty sure there are cases where (contextually) "our" person doesn't seem to be a family member but, rather, a close friend or something like that.
Am I really completely wrong and that is never the case?