Vingalmo

Vingalmo is an Altmer vampire and one of Lord Harkon's primary advisors. He and fellow senior vampire Orthjolf are embroiled in a fued over the throne, and can be often heard making cutting remarks towards one another.

Background
Upon first meeting with Vingalmo, he and Orthjolf will be arguing in the dining room. Once their exchange is complete he will warn the Dragonborn not to trust Orthjolf.

Bloodline
Vingalmo is first met during Bloodline. He's so thrilled to see Serana again, that he announces her return to all other vampires inside Castle Volkihar.

The Bloodstone Chalice
Upon starting the quest, Vingalmo is surprised to hear Harkon is sending the Dragonborn to fill the chalice and reacts with suspicion.

Once the Dragonborn fills the chalice from the bloodspring, Stalf and Salonia Caelia spring an ambush. It's revealed that Vingalmo sent Salonia Caelia in pursuit to kill the Dragonborn and retrieve the chalice. Vingalmo hoped that this would give him more power and would bring him one step closer to claming Harkon's throne.

New Allegiances
Vingalmo has found a new candidate, ripe for Harkon's Gift. He sends the Dragonborn to welcome the person into the family.

The Gift
Vingalmo mentions that he knows the Dragonborn has a spouse, and asks that they be turned into a Vampire.

Witty banter
Orthjolf: "Well, well. Where have you been, Vingalmo? Nose stuck in a book all day?" Vingalmo: "Orthjolf, I'm surprised! I didn't even think you knew what a book was, my brutish friend." Orthjolf: "You'd do well to watch that tongue, elf." Vingalmo: "And you'd do well to be more careful of whom you engage in witty banter."

Mind games
Orthjolf: "Surprised you weren't at the last meeting with our Lord, Vingalmo. Too busy plotting to overthrow him to show up?" Vingalmo: "What? What meeting? I wasn't informed of any such thing!" Orthjolf: "Oh I see. I just understand he'd sent for both of us. How awkward for you."

Quotes

 * "How dare you trespass here! Wait... Serana? Is that truly you? I cannot believe my eyes!"
 * "My lord! Everyone! Serana has returned!"
 * "You seem to have lost the gift the Lord Harkon gave you. I suggest you tell him at once. Hopefully he'll be gracious enough to make you one of us again." - If cured of Vampirism.

Quests

 * New Allegiances
 * The Gift

Bugs

 * He may give you a quest you've completed for him already (i.e. turn Valindor into a vampire). If this happens you will have to reload a previous save or kill the target to fail the quest.
 * He will talk about a new candidate, but no notifications on whom you infect will show up.
 * Sometimes he will not give quests.

Appearances

 * The Elder Scrolls V: Dawnguard