I did a full demographic audit of I6 Ravenloft — strictly the 1983 module — counting every living human, every fixed monster, and every named individual on both sides. Charts, source notes, and a degrees of certainty framework included.
A Census of the Damned: https://vaultsoftheodd.com/the-most-peculiar-census-of-barovia/
Most of what’s been written about the Holy Symbol’s origin since 1991 contradicts the foundational sources. The true account sits in the prologue of Christie Golden’s Vampire of the Mists, cross-referenced against I6 and the Realm of Terror boxset. The prologue is the only major source untouched by Strahd’s propaganda. I’ve written up the argument: who actually crafted the Symbol, when, and why later retellings should be set aside.