The Keep on the Borderlands is set in Dyriamarch, a region of Melderyn claimed, but not effectively controlled by that kingdom. There is also a letter meant to be handed to the players before the adventure.
This article details the house of Senator Rylen in Coranan, his mother, and his people. This is a senatorial household on the cusp of change, ripe with possibilities.
Within a half league of Burzyn are several notable locations. This 12-page article includes history, manor capsules, location details, and adventure hooks, plus three location expansions within Burzyn.