in progress...
What makes a great house "great" you ask? Is it just the title? Where does their power and status come from (particularly when there isn't really "money" in chaos)?
Ducal Titles:
Court Titles:
People: Bloodlines of the great houses do tend to produce more impressive scions than the minor houses, though there are exceptions both ways. It is much more common for members of the the minor houses to fail to take the Logrus, or to not attempt it at all.
Land:
Demons: Typically great houses have a number of powerful demons or even demon families in their ancestral services.
Great Weapons: Each great house traditionally possesses one of the ten Logrus swords of Chaos. Normally, this weapon resides with the Duke or Duchess, though there have been exceptions. This is no longer strictly the case, as the Swayvil great weapon was destroyed in the Time of Troubles, and Bodaway, the Jasby weapon, was confiscated and is currently being held by Francis Helgram. The Helgram weapon, Anpaytoa resides with the King.
Prestige: Great houses maintain high public standing by providing arts and services for the nobility of chaos.