First off, Laurelorn Forest was one of the stops passed by the Old Dwarf Road that led from Karaz-A-Karak to Sith Rionnisac, the former Elven Port that became Marienburg today. It contained the two cities of Kor Immamor and Tor Lithanel of the "11th Kingdom of Ulthuan: Elthin-Arvan". The only surviving city of Elthin Arvan is Tor Lithanel (Athel Loren is a different story), and Queen Marrisith seems to view Laurelorn as the 11th Kingdom itself rather than calling it Elthin-Arvan.
Laurelorn seems split by the Eonir into 4 sections. South Laurelorn, the area known to the Empire as the Schadensumpf, a wetland that encroaches into Middenland territory, is known to the Eonir as the Ward of Rain. Eastern Laurelorn, the areas of Oldenlitz etc. that Salzenmund is next to which Nordland's been encroaching on, is the Ward of Frost. Which also holds the ruins of Kor Immamor. Western Laurelorn, approaching the coast of the Sea of Claws, is known as the Ward of Storms. Northern Laurelorn is known as the Ward of Sun, and includes the city of Tor Lithanel and its surrounds.
In the Ward of the Sun is their great city of Tor Lithanel, which is their capital and center of government. Outside the city the Forest-Born Faniour reside, and within the city the City-Born Toriour reside. Inside Tor Lithanel the city is lined with two story buildings, beautiful trees and 3 notable towers, one of marble, one of obsidian and one of silver. The largest houses in the city are known as the Major Houses, and the families living in them are given a seat in the High Council and therefore a great deal of power.
Eonir society is stratified between the Faniour, who are composed of refugees from the War of Vengeance who sought shelter in Laurelorn and were forbidden from entering the city, and the Elf population of Laurelorn that immigrated there before the War of Vengeance known as the Toriour. The Grey Lords are a group of exiles and researchers who went on an expedition into Elthin-Arvan and never returned to Ulthuan, saving the city of Tor Lithanel from the hordes of Dwarves during the War of Vengeance and winning their place in the city as the result. We don't know much about the Forest Spirits of Laurelorn, but I assume they have a place in their society as they're involved in the Ward of Frost's council.
The political structure of the Eonir is split between the Triumvirate, the High Council and the Wardens. The High Council are the legislative body, currently composed of 24 seats, where votes and meetings are held for major decisions and changes made in Laurelorn. The Triumvirate act as tie breakers when the High Council are tied. The Wardens are individuals who oversee and control one of the four Wards, and are also known as Vicarius (Vicarii plural).
The Triumvirate holds 3 members. The Queen is the only permanent member, a hereditary position currently granted to Marrisith as she is the first Queen of Laurelorn's great granddaughter. The Champion of the Everqueen is granted their position every 4 years during the Festival of Games in honor to Asuryan, which is a series of tests and competitions of skill and strength. This method of choosing the champion tends to lead someone venerated to Asuryan to hold the seat, and one who would more likely be a piece than a player. The third seat is the Vicarius seat, granted to one of the four Wardens and it changes every year, cycling between them. The remaining 3 wardens sit on the High Council. The current Champion is Kadoh and the current Vicarius Triumvir is Lady Delynna, Warden of the Sun.
The High Council is made up of 24 seats currently (previously 25 before Elwyn went extinct). 3 of those seats belong to the 3 Wardens/Vicarii who aren't the Triumvirate this year. The remaining 21 seats are held by the Major Houses. As explained above, the Major Houses are the families who have a big house in Laurelorn, and as such only Toriour are allowed to be Major houses. These families all originally came from Ulthuan long ago, and tend to venerate a particular god of the Cytharai or Cadai strongly, and they all have a great deal of influence. Two of these Major Houses also have a Vicarii in the council, giving them an effective 2 votes.
The Ward of Frost used to belong to the Major House of Elwyn, the only remaining Major House from Kor Immamor (a city in Laurelorn that was destroyed by Dwarves during the War). Thanks to both being Wardens and a Major house, they held 2 votes and refused to cooperate with outsiders. They also had a lot of influence with Asuryan worshippers. With the death of Vicarius Lindalioc (former Warden of Frost) as well as his uncle and son, the family is extinct, losing their vote in the council. The Ward of Frost has now fallen into the hands of a council of Forest Born Faniour and Forest Beings, including Vicerine Cadaeth, that are in support of outside contact.
The Ward of Rain is under the control of Prince Galenstra of House Fanpatar, which also happens to be a Major House. As such he has two votes on the High Council and is often a Triumvir. The Ward of Rain contains the Tarn of Tears (source of Laurelorn's magic) and was the site of the battle that led to human and Eonir cooperation.
The Ward of Sun is under the control of Lady Delynna of House Malforric, a Major House that currently dominates Asuryan worship after the death of Elwynn. She has 2 votes as a result. The most isolationist vote, and implied to have voted against contact multiple times. Strong bloc.
The Ward of Storms is under the control of the forest born elf Kaia known as the Stormwitch. She advocates for peaceful relations with the Empire, as well as the Druchii and Norscans.
Previously, the votes for outside contact were 16 to 9 against when the Stormwitch was Triumvir, because she was the only Vicarius that voted for contact. With the death of House Elwyn, that's one vote down, and the Vicarius position went to the Ward of Frost council who were open to cooperation. Graf Boris proved himself to Prince Galentrus, giving outside contact 2 votes. House Ellemakil were swayed by the queen and became the most prominent worshippers of the fledgling Ulric temple. This shifted things, and with the Champion no longer swayed by House Elwyn, the vote is 12 to 12 with the Vicarius Triumvir as Delynna, and 2 of the Triumvirate (Marrisith and Kadoh) vote to break the tie in favor of contact.