From SuspireWiki

Primogens are typically not used in modern times and they rarely exist within Tomesha Valley.

If a single position can be considered nearly as ubiquitous and representative of Kindred politics as the Prince, it is the Primogen. The Primogen (singular as well as plural) officially serve as the Prince’s advisory council on matters of policy. The precise nature of that council varies from domain to domain. If the Prince is strong and especially tyrannical, the Primogen might be little more than a formality, a conclave of elders who serve to rubberstamp whatever the Prince wishes to do. In most domains, they serve as true advisors, and most wise Princes try to take that advice into account whenever possible. Some Primogen are powerful enough (or the Prince they advise is weak enough) that they can actually overrule the Prince on certain matters. A few Primogen actually rule their cities, either through a figurehead Prince or openly as a governing body. The precise size and nature of the Primogen varies. Some are informal, meeting in shadowy back rooms when the situation requires, arguing out whatever issue brings them together. Others cleave to a schedule and procedures for speaking, often appearing much like a governing board, a congress, an old-fashioned Greco-Roman senate, an ecclesiastic council or any other form of organization imaginable. Said councils can range from a mere three or so vampires in small communities to large advisory bodies, which may consist of a dozen or more Kindred.

For the most part, the Primogen consist of those local elders who have sufficient power to claim a seat. Also common are those Primogen who decide among themselves whom to admit into their ranks. More rarely, a Prince might select members of his advisory council, but this occurs only in cities where the Prince is especially strong and the Primogen especially weak. Most Primogen contain a mix of members of various clans and covenants, though some are more homogeneous, depending on the domain. That is, the Primogen in a city largely dominated by Carthians is likely to have more Carthian members than any others, and the Primogen in a city where the Gangrel are persecuted is unlikely to have many Gangrel members.

Five Things a Primogen May Do

• Poll members of their covenant for opinions on issues which may draw the Prince's attention
• Negotiate with other Primogen to support their view (...to present the Prince with a bloc of opinions)
• Accept bribery for advising the Prince on a course of action (...that benefits someone(s) in particular)
• Investigate the current feeling of the city in general on an issue the Prince wishes advisement on
• Inform the Prince when the people of the city are riled up about a law