The Veiled Heritance was a covert group of Altmeri nationalists formed in 2E 582 in response to the rise of Queen Ayrenn and the Aldmeri Dominion. Vehemently against the young queen and her Bosmer and Khajiit allies, they sought to depose her and appoint their own regent, the Veiled Queen, High Kinlady Estre of Errinorne.
The Heritance consisted mainly of disenfranchised veterans and youths. Many more traditional Altmer despised the Dominion due to their feelings of racial superiority and disliked Ayrenn due to her unorthodox wanderings as a youth, and as such the Heritance enjoyed widespread support. The group's main presence was on Auridon, and their base of operations was a ruin on Errinorne Isle known as the Veiled Keep. Recruits would be taken to the island to train and pledge their souls to the Heritance. The group were aligned with Mehrunes Dagon due to Estre's secret worship of the Prince, although they eventually fell under the sway of Molag Bal.
In 2E 582, the Vereansu led an attack on the Temple monastery at Muth Gnaar. The monastery held the Tear of Saint Veloth, an artifact sacred to House Dunmer and Ashlanders alike. The healers at the monastery were using the Tear to suppress the effects of the Llodos Plague, which was spreading across Deshaan. The Vereansu, in their fear of the plague, viewed the Tear's use as defilement and sought to cleanse the monastery with flame. They captured the afflicted and many of the priests who tended them, and locked them within burning buildings to perish. Without the Tear's protection however, many of the afflicted transformed into Plague Husks and attacked the tribe. Amid the chaos, fleeing priests called for aid from the roadside, and were successfully able to rescue several people from the monastery. The Vereansu wise woman was killed while attempting to destroy the Tear, and the tribe was eventually driven off with the death of its ashkhan.
Vigil of Stendarr
The Vigil of Stendarr is an order of paladins devoted to the extermination of Daedra in Tamriel, which was created shortly after the Oblivion Crisis. Each provincial chapter is led by a Keeper of the Vigil. In addition to Daedra, the Vigil also hunts vampires, werewolves, and necromancers, which they see as abominations.
The Volkihar are the most powerful tribe of vampires in Skyrim. The Volkihar are paranoid and cruel, and their breath is said to freeze their victims' blood in the veins. They usually live in eastern Skyrim, beneath the ice of remote and haunted lakes, never venturing into the world of men except to feed. Despite these claims, they are sometimes known to dwell within vampire lairs with others of their kind, and can be found all over Skyrim. They can reach through the ice of their lakes without breaking it to grab unsuspecting victims from the surface. Members of the Volkihar bloodline are infected with the vampire's disease called Sanguinare Vampiris, instead of the more common Porphyric Hemophilia.
Lord Harkon and his family are apparently the progenitors of the Volkihar clan. They are pure-blooded Vampire Lords, having been given the gift of vampirism directly by Molag Bal. Harkon and his court dwell within the ancient Castle Volkihar, on a remote island off the coast of Haafingar, near the border of High Rock. The Volkihar bloodline thins with each new generation, becoming weaker and eventually losing the ability to transform, though the progeny and "grandchild" of a pure-blood are still pure enough to transform into a Vampire Lord but are still considered to be half-breeds, at least compared to the Daughters of Coldharbour and Harkon. According to the ancient vampire Vingalmo, certain star signs as well as a mortal descendant of Harkon will allow vampirism to be "faithfully" accepted by the descendant, thus creating a vampire lord seemingly regardless of generation.