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Room requirements  
Office Opulent Throne Room
Quarters Grand Bedroom
Dining room Grand Dining Room
Tomb Grand Mausoleum
Furniture requirements
Chests 5
Cabinets 3
Weapon racks 3
Armor stands 3
Mandates 3
Demands 5
Arrival conditions
  • 20 population
  • 300k created wealth
  • 30k exported wealth
This article is about an older version of DF.

The Duke (or Duchess) is the next step up from a Count. Your county becomes a duchy after reaching certain criteria and meeting with the liaison; once the liaison leaves the map, your Count will be promoted. In other words, your lands must be a county before it can be a duchy. As with the upgrade to a County, this is automatic and cannot be rejected.

Appointed Nobles
Military Ranks
Elected Nobles