From Labyrinthe Wiki
House Thell - The House of Swords (NPC)
House Thell is an old house, but small, and one which in years gone by faded into forgotten shadows. It came to power under Asmalev Thell, a Sallow Prince who later became the Avatar of Humakt and who gave up his ritual might to forge the sword Death and create a band of brothers & sisters of the sword who would linger between life & death to act as it's gatekeepers.
In modern times the name has been resurrected to describe those swordsmen who serve still under Asmalev, bound in oath to Death, now released from their servitude to Yllren and the House of Chains. As Arvalath and Asmalev are both dead, it is currently uncertain whether any living members of the blood remain within the house.