Prōtostratōr
From NSWiki
The Prōtostratōr or Imperial Stable Master is the position granted to the second in command of the Ploíarchos tou Áloga (Master of the Horse in Diadochia).
Duties
The duties of the Prōtostratōr include acting as the second in command to the Ploíarchos tou Áloga. The Prōtostratōr has the right to ride beside the Emperor and palys apart in the introduction of ambasadors in the Imperial Court of Diadochia.