The Greystone Bastard (naming lore query)

[Yuyuka3]

I was kind of surprised to see so much resistance to the idea that it was a bastard surname (to the point that, hey, maybe he had two battle titles and they nixed the surname on his public memorial in favor of the less popular one).

It's a core feature of Haurchefant's character that the most chivalrous member of House Fortemps was supposedly beneath its name. It's almost more offensive to raise him up after he's dead, isn't it? Treating him like he earned an upgraded name when in truth he humbled those who bear it? When it comes to what goes down in history, Haurchefant Greystone is an example that I wouldn't want diluted by a posthumous feel-good gesture.

If in-world logic isn't enough, though, let's come out-of-world for a minute.
Haurchefant needed a quick-but-meaningful backstory and they invoked Jon Snow.

I just want to clarify that I'm not saddened about the fact that he didn't receiven an 'upgrade' upon his death by being called a Fortemps or something like that.
I'm saddened that they make such a distinction as in giving him a very obviously non-Ishgardian name, so that it's quite obvious for everyone who ever met an Elezen that something's wrong with his family name. I would have been quite okay with him bearing an Elezen-like surname that could have also been argued to be his mother's. But, what they did is make it so obvious even an blind idiot can see it. I hope I explained it right, since I know that's not always my forte.
But, well. Being accepted into a family usually includes bearing that family's name.

I am, however, aware of where this comes from. I know about that naming convention for bastards in Game of Thrones, and I'm also very aware about where Martin got his inspiration from. 'Fitzroy' was already mentioned, but there is also a very real, and later on very powerful british noble house - the House Beaufort. They where illegitimate decendants of John of Gaunt, before being legitimized when he was actually able to marry their mother. Still, the fact remains that they where originally bastards, and surely suffered from that. So, yeah. I guess my main peeve is that society brands children for something they got no say in... until today, even if to a much lesser extend.