|Region||Sea of Ghosts|
Grayhome is a small isolated island located in the Sea of Ghosts far north of High Rock. It is directly north of the Great Bay, which lies between Wrothgar and Rivenspire. It is mostly frozen and the only major building on the island is Castle Grayhome, an ornate vampiric castle. The island was a base of operations for the Gray Host in the First Era. It was active during the early years of Empress Hestra's rule,  but was abandoned after the defeat of the Gray Host circa 1E 1029. The castle was dilapidated as of the Second Era.
Rada al-Saran was responsible for the construction of the Grayhome Castle, despite the fact that the Gray Host was led by King Styriche of Verkarth at the time. The island was a place where the armies of the Gray Host were stationed before the start of the conflict with the Empire led by Empress Hestra in 1E 1029. 
Count Verandis Ravenwatch once performed experiments in Grayhome when he was an Exarch of the Gray Host. His experiments had two goals: to resurrect mortal souls from their afterlife and to free vampire souls from Coldharbour and the influence of Molag Bal. He started the experiments with the souls of mortals before attempting to perform such a ritual on a vampire. He managed to bring back the mortal woman Lisolda to life, but returning to the world of the living drove her mad. Verandis was forced to kill her to prevent her from harming anyone.
He created Stone Husks, vessels capable of freeing souls from Coldharbour through the use of alchemy. He modified the ritual and ultimately discovered how to bring vampiric souls back from Coldharbour, but he realized that the amount of life energy required to pull a soul out of Coldharbour is a price that is too high to pay and decided to drop his research. However, he kept all the notes and record of the process in his journal.
Exarch Tzinghalis later utilized the laboratory in the castle for his own research. He continued the research abandoned by the Verandis and used parts of his research regarding the resurrection of vampiric souls to craft a method for pulling the life energy out of a vampire or werewolf, super-charging it, and turning an individual corporeal warrior into an incorporeal soldier of great tenacity and utter loyalty. His creations were believed to be able to fight and guard Castle Grayhome for eternity.
It will be a beacon of hope for our kind and the mortals who serve us. A grand reminder that anything is possible with hard work and vision."
The island of Grayhome was visited by Verandis once again, sometime prior 1E 1029, after receiving an invitation from Rada al-Saran. Verandis hoped to convince the leaders of the Gray Host to make amends with Empress Hestra rather that fight her, but his words of advice were ignored.
The Gray Host was ultimately defeated by Empress Hestra in 1E 1029 and only a few members of the group survived. The Gray Host's remains were burned and their ashes hidden away in a burial cavern referred to by scholars as Unhallowed Grave. Rada al-Saran was among the few members to survive, and spent centuries looking for a way to return twelve of his Exarch siblings to life.
Sometime after the place was abandoned by the Gray Host but prior to 2E 582, the island was briefly visited by Verandis Ravenwatch. He placed magical protective wards on the island in order to seal the place from visitors and prevent people from entering the castle.
The isle and the abandoned castle were visited circa 2E 582 by Gwendis of House Ravenwatch and the Vestige. They traveled to the castle in hopes of finding clues regarding Verandis' involvement with the Gray Host.The island at this time was desolate save for icy and undead wildlife such as Death Hounds, vampiric bears and sabre cats, and Ice Wraiths. The place was filled with numerous magical traps, Gargoyles, and Spectral Assasins devised by Exarch Tzinghalis.
Once they managed to deactivate the protective wards and defeat the Spectral Assassins guarding the door, Gwendis and the Vestige entered the castle. Despite the passage of years, the place was still impressive. In order to uncover Verandis' secrets, they decided to use a Dream-Walk potion—a concoction that allows the imbiber to access the memories of the person whose blood was added to the mixture in form of the vision. This revealed the brief visit of Count Verandis to Grayhome prior to the war with Hestra.
Ultimately they decided to resurrect an Exarch of the Gray Host with the method devised by Count Verandis Ravenwatch to ask further questions. It is unknown whether they resurrected a long-dead Gray Host member or Count Verandis himself. Either way, the group departed the castle with Verandis, having discovered the answers to their questions.
- For game-specific information, see the ESO article.
- Exarch Vem's dialogue in ESO
- Bangkorai, Shield of High Rock — King Eamond
- Events of The Gray Council in ESO
- Exarch Ulfra's dialogue during The Gray Council in ESO
- King Styriche of Verkarth's dialogue in ESO
- Exarch Uls Grimlantern's dialogue in ESO
- To My Dear Friend — Rada al-Saran
- Verandis's Journal — Count Verandis Ravenwatch
- Fennorian's dialogue in ESO
- Exarch Tzinghalis's dialogue in ESO
- Spectral Assassins — Exarch Tzinghalis
- My Beloved Siblings, the Exarchs — Rada al-Saran
- Count Verandis Ravenwatch's dialogue during The Gray Council in ESO
- Gwendis's dialogue in ESO