The Greystone Bastard (naming lore query)

[Ayuhra]

Sorry again for this big off topic post ^^;

Now it seems that either I am really blind or that the including of this bastard surname is a English thing only? I have read his minion description again and could not find any mention of this surname. I sadly don't remember if the name is part of the German description of this picture but I at least cant remember something like that.

I am now kinda curious what his Japanese description is? Since the English one seems to be coming from GoT?

I would imagine "Greystone" is in all versions because it's also the name on his memorial stone. It's in Eorzean script and hard to read because it's low res but it's there.