The northern half of the Sodden Lands was once the proud dominion of Lirgen, a land ruled by the Saoc Brethren, a syndicate of astrological philosophers dependent on prophesy. When the Brethren’s prophesy suddenly failed following the death of Aroden, the ensuing storm caught Lirgen entirely by surprise. Lirgen’s surviving refugees resettled far from home, and are scattered widely across Avistan and Garund. A number of descendants of the original Saoc Brethren return to the Sodden Lands, tenaciously searching for a hidden secret to at last extinguish the Eye and restore their homeland. Those who survive and return abroad to report to the Brethren, however, frequently do so with shattered minds, leaving the embittered philosophers no closer to the answers they seek. Indeed, in 4615, the Brethren lost its entire upper-tier of leadership to ritual suicide. It is whispered that the astrologists at last uncovered the true answers behind the source of the devastation, but the secret was more than their mortal souls could bear.
Sources: Pathfinder Chronicles Campaign Setting