The Greystone Bastard (naming lore query)

[Morningstar1337]

Gosh, that's kinda sad when you think about it.. Knowing that his memorial and the minion are both by house Hallienarte(granted the minion was crafted by the first born son). That means when his close childhood friend Francel was to pick a last name for Haurchefant's memorial. He basically picked Greystone instead of using Haurchefant's battle title (of the silver fuller) that he was known for and had fought for.
I mean it's a memorial so he didn't have to immortalize Haurchefant's bastard status, but the fact that it now is, is kinda sad.

I would like to ask if we know anything about Ishgardian funereally laws. I want to see if there's anything requiring the use of the deceased name, bastard surname and all, on tombstones