1. Has there ever been a peacekeeping force or something similar in Aefenglom? Yes; this would be the City Guard and the Diplomatic Seats of Parliament.
2. If it's just the City Guard, what can he learn about the City Guard? Comprised of both humans and monsters. Many members are volunteers with combat experience, though the founding force are a lot of military officers from when the Aefenglom military was disbanded to better focus on combating the Cwyld. Captain Swain Kershaw is the primary head of the City Guard.
3. Has there ever been a force organized specifically to combat or investigate the Cwyld? 07/03 EDIT: Oh, I just realized this might be the Wilders? History on that if applicable too, please! Yes, i's the Wilders. Put together some 100-150 years ago - time is a construct that is only loosely tracked by the people of Geardagas - in response to a need for volunteers to help combat and research the expansion of the Wilde and the threat of the Cwyld. The creator was the head of the Coven at the time and their Bonded Monster, and they've since expanded into a semi-separate branch of the Coven that specializes in the Cwyld.
4. I'm assuming that the information on the Cwyld page is roughly analogous to what he might find in the library about the Cwyld. Is there anything special about the Cwyld that he might learn at Parliament? Parliament will not be teaching anything about the Cwyld to anyone at this time.
5. Have there ever been moments leading to widespread civil unrest, or political turmoil? For example, has a Coven head ever been deposed? Have members of Parliament ever been assassinated? I... look, basically he's searching for dark shit in Aefenglom's history. Yes, though the history of Coven heads and Parliament members is a little harder to locate than the greater history of the continent. Wars have been waged across Geardagas, the last of which being some 300 odd years ago by their sovereign tyrant, King Serwyl da Uathmar. da Uathmar meaning the dreadful. He sought to rule all of Geardagas with Aefenglom as his seat, before the city united to depose him and his heirs from the throne. Many, many people died needlessly, and many of them on small and large leyline alike.

The energy that came about from the war, the deaths as well as people with ill intentions using the power of the leylines, could very well have weakened and tainted the leylines they fell upon.

A good example would be the Coven destroying King Serwyl's castle and taking back the land. They already resided on the grounds because the Looking-Glass House has... well, always been there, after all, so they destroyed the castle and took a part of it for their use while distributing the rest to the city itself. Some of that land now lies outside the Wall, but regardless they worked to cleanse it with more positive magic, nourishing the growth of plantlife to repair the Bond Aefenglom has with its leyline.
6. Can he get access to the published research notes of the first Witch to forge a Bond with a Monster? No.
7. What kind of information can he find on the history of Bonding? Is there any hint that Bonding might be dangerous? None, at least that is accessible.
8. Generally, what can he learn about the Looking-Glass House in the Coven? The history of the mirrors is a little... fuzzy, but it's the only place like itself that they know of. There are no other places in Geardagas reminiscent of the Looking-Glass House. And as far as they know, the House has existed for as long as the Coven has, under its various names and in its different forms. And the concept of the Coven has been around for a very, very long time now.
9. Generally, what can he learn about the history of the Coven, and of Parliament itself? The current iteration of the Coven has been around for about 300 years, give or take, to give him some point of reference. A little longer than the Parliament has as its current form - the Parliament was named as such when the people of Aefenglom deposed their sovereign tyrant King Serwyl da Uathmar and his heirs.

But there are many theories about the House that scholars have had over the years. It was a gift from the Fae; it was a gift from the Sisters; it was created to worship a long-dead god, the Sisters, the world itself; it was used to channel the leyline that Aefenglom sits on. No two people will agree on anything, and there are actual published debates over this.

Of particular note is that, about 300-350 years ago, the Looking-Glass House was owned by the sovereign family and overseen by the Coven on the castle grounds. The castle was, effectively, built up around it as opposed to the House having been built afterwards.
10. Have there ever been other forms of government in Aefenglom? Monarchy? Theocracy? He loves monarchy and theocracy. See above!
11. What can he find about religion in Aefenglom? Aefenglom itself has a large population of agnostics and atheists. The worship of the Sisters (the moons) and/or the Stars as deities is common. There is evidence of a dead pantheon in ruins across Geargadas; the worshiped appear to be things represented in the world (seasons, rivers, etc). There is also the Circle of the High Queen, a group dedicated to the worship of the Fae's High Queen (even though no one has seen her in 300 years). Various small cults also pop up occasionally, or attempts at religious movements, but they typically are short-lived or live in obscurity.
12. How many members of Parliament are also Witches? A lot, no exact number. Not all of their Bonded are members of Parliament however.
13. Have Parliament and the Coven had any significant disagreements with regard to magic or the use thereof? A lot, probably too many to keep track of. Speaking to any member of either will net many rumors and old feuds.

Parliament has no accessible records of the expedition into Dewaint Forest.