Thraedli is a grouping name for six Eldritch bloodlines that were born in the Creation War (1486 DE - 8777 DE). They were servants of Chaos, serving the Primordials in their war against Creation and their Covenant backers.
In the Titan Era, the Thraedli of Gulfrek Hjard provided arcane learning to knowledge seekers out of Mir'piamauza. Some say that the eldritch giants intentionally provided them with the tools to bring upon their downfall. The Thraedli taught them ancient spells and gave them tomes of arcane lore that had all but been forgotten.
In the icy wastes of the Ice Cap, is another group of Thraedli. They were at first students of the Lith-Crillion. The more they learned from them, the more they realized that the Lith-Crillion may be the holders of the last vestiges of knowledge lost to them when the primordials retreated. For almost a century, they worked for and learned from the Lith-Crillion, then they attacked them and captured Miradalêth. After they formed Saer Erkjorg, the eldritch giants continued their search for the holds of the Lith-Crillion.
The Thraedli of Frosvirk were responsible for reviving an ancient form of necromancy called Maen Saetild. This magic would lead to the devastation of Frosvirk and the creation of the first boundary ward.