Arcueid is spared from the whole Altria debacle. Probably because it's not derived from a historical name. That said, I checked how Artorias from DS1 is spelt in romaji and it's written as アルトリウス(arutoriusu), aka similar to Artorius the Roman general. So even though the writing in English says Altria, it's sounded like Artoria in Japan. Still, might never know why Nasu deliberately insisted that spelling in English.