For the locations of every clue and member of the Order of Ancients, we have a full page, here. Assassin’s Creed Valhalla – Who is The Vault? We know that The Vault is a member of the council of Jorvik, narrowing the suspects to three: Faravid, Audun, and Hjorr.
To stop The Vault, they must consider all of the evidence they’ve collected throughout their time in Jorvik, and come to a conclusion.
All this evidence is rendered a little redundant though, since if you go into the Order menu and select The Vault, it’s clearly Audun standing there.