Riders of Apocalypse is a part of Tyvian Lords.
This is the rulership position for the realm.
The position of Grand Vizier is that of advisor and general 'doer' within the Duchy.
Duchess Kalisa snidely created this position for her cousin Ascort, as the title is often associated with plotting and scheming behind the ruler's back. She doesn't have much hope for him as a warrior, but he might be useful as help running the Duchy.
This member of the Duchy is responsible for maintaining the militia in Estates, building defensive structures, and keeping the bandits in check.
Riders of Apocalypse is both a military force as well as a play upon words. The tiny estate of Apocalypse on the sea is the seat of power for this Duchy, now ruled by Duchess Kalisa Rider.
Riders of Apocalypse is a loose collection of poor estates, driven by The Duchess to recover from decades of mismanagement. Whether it will become a powerhouse or another failed western Duchy, only time will tell.