There are three classes of Morturii nobility:

Aga - Gold House (royalty)
Setze - Silver House (nobility)
Geset - Copper House (petty nobility)

There is also an equestrian order of nobility AnDaros - Order of the Arrow (knights)

Prime: The same middle class of merchants and landed men as in Byzantur. A prime citizen has more rights than commoners and freedmen, but less than nobles and knights. Slaves in Morturii have their own list of rights that may not be set aside even by a nobleman of the Aga.