The Warp in the West was an event that transformed the Iliac Bay region. Sometimes called the Miracle of Peace, this event, known as a Dragon Break, occurred as a result of the myriad of endings possible in The Elder Scrolls II: Daggerfall. It is referenced in the book The Warp in the West.
Wayrest spreads across the eastern coast of the Bay, stretching from the land formerly called Anticlere to half of Gauvadon. Eadwyre has passed on to his ancestors, leaving his kingdom in the hands of his daughter, Elysana, who has two children by her royal consort, and seems likely to hold her father's lands. Your Lordship may also choose to communicate directly with King Helseth and Queen Barenziah in Mournhold. Their primary preoccupations are, of course, with Morrowind's affairs, but they may still have useful observations upon Wayrest's ruling families and political environment that may aid you in your understanding of the court of Queen Elysana.
King Gortwog of Orsinium controls much of the Wrothgarian Mountains as well as the profitable rivercoast of the Bjoulsae. He persists in his demands that Orsinium be recognized as an Imperial province separate from High Rock. The Elder Council treats Gortwog as a recognized king, and collects taxes directly from Orsinium, but officially Orsinium remains a county of High Rock, though technically it spans both the provinces of High Rock and Hammerfell.
Sentinel has gained the most land, sprawling across the entire southern Iliac Bay from Abibon-Gora, beyond the Dragontail Mountains, to the edge of Mournoth, Orsinium's territory. Queen Akorithi at her death left her enormous kingdom to her only surviving son, Lhotun, who is now surely one of the most powerful kings in Tamriel.
Daggerfall is still ruled by the Breton King Gothryd and the Redguard Queen Aubk'i. Their land now encompasses all of western High Rock, from the border they share with Wayrest at Anticlere to the east, to Ykalon to the north. They have four children now, and are much beloved in their realm.