Head of HouseholdEdit
To be an "heir" is not a caste-rank. As subtle as it might be, there is individual choice in this society: the head of household's choice, in this case, of whom to appoint as heir. Sometimes, there are mistakes.
Being poorly suited to run a household does not mean an heir cannot be a suitable noble in other respects. The heir is already a noble, just perhaps not a noble suited to running a household. But Ai-Naidar in the noble caste also serve supporting functions to Heads of Household.
Primary city family. Nobles charged with an entire city district. Their suggestions have the weight of law.
Major city family
Minor city family
Primary country family (rules the others)
Major country family
Minor country family