Vampires In The Elder Scrolls

Janus Hassildor, the Count of Skingrad, is rumored to be a vampire in the game Oblivion. The inclusion of his full name and title suggests that he holds a prominent position in the game's world, making it more believable that he would be the subject of such rumors. Additionally, the repetition of his name as "Hassildor" further reinforces his significance and the likelihood of him being associated with vampirism.

Vampires of Vvardenfell, Volume II, Opusculus Lamae Bal ta Mezzamortie A brief account of Lamae Bal and the Restless Death, and Manifesto Cyrodiil Vampyrum all credit Molag Bal

While you can interact with guilds in Daggerfall and Oblivion only the Mages Guild out of the above will talk to vampires in Morrowind.

There is no Holy school in TES.In Daggerfall, Morrowind, & Oblivion all vampires have a weakness to the sun and fire.

Bonsamu is the correct answer because they are a northern Valenwood clan that appears to be ordinary Bosmer, but their true nature is revealed only in candlelight. This suggests that they have a unique physical characteristic or trait that becomes apparent when illuminated by candlelight.

Info comes from Vampires of the Iliac Bay

There are nine playable bloodlines in Daggerfall, three in Morrowind, and one in Oblivion.

The Order of St. Eadnua mentioned is actually Aundae backwards.

Paralysis and Disease immunity are the common immunities in Daggerfall, Morrowind, and Oblivion