Fief Seat, for le Fief de la Rue Frairie, is located in Rue des Buttes (Perrys P23 F0.8, 4 0.9). Its purpose is in dispute as there is no record of a meeting of le Fief de la Rue Frairie at this location. However the consensus is that it is in fact a Fief Seat.
Fief Seat