House Marbrand of Ashemark is one of the principal noble houses of the West.

Their seat of Ashemark is located atop the source of the river called the Tumblestone.

Their sigil is a burning tree, orange on a smoke-grey field.

An ancient line tracing back descent from the Age of Heroes, House Marbrand has always been closely associated with their overlords, the Lannisters of Casterly Rock.

The current lord, Lucion Marbrand, has increased the house's wealth and power substantially over the course of his reign.