That would make sense. I think you're probably right with the Lagarius relative. I imagine we're going to take that holiday visit soon and this is probably it. He's either IMO, probably some little dipshit minor relative that Lia ends up getting friendly with, and he just ends up getting dragged around by her. Or he's going to have been told by his relatives expressly, to get close to Lia. Or maybe even Elis. And this is him attempting that.
All I know for sure, is that people with that fucking broccoli ass haircut, usually end up being pricks. So I already hate him...