The Vampire in the Trailers and Renders Isn't Vladislaus Straud IV[]
I've noticed that Vlad IV isn't the vampire in the trailers and renders, they have different facial features. The vampire in trailers and renders has another eye colour, a slightly rounder face, no eyebrows, ears which tips go more upwards, a less crooked nose, and a less protruding chin which also has a chin dimple. I would guess that the vampire in trailers and renders is one of Vlad IV's ancestors.
Talking about Vlad IV's ancestors, there should probably be a part of his page which is about his ancestors, because there are things on his page which isn't about him but about his ancestors. For example, the in-game description for Vlad IV says that it was one of his ancestors who founded Forgotten Hollow, it wasn't Vlad IV who founded it.