The terminus was located near Gregor A, a F9 star with no habitable planets. Traffic through the terminus was directed by the Manticore Astro-Control Service.
First found in 1662 PD, the Gregor Terminus was the fourth overall terminus of the Manticore Junction to be discovered. (Companion)
When the Andermani Empire annexed the Gregor-B system around 1869 PD, it recognized the preexisting treaty that the former Gregor Republic had with the Star Kingdom of Manticore, which gave title of the terminus itself to the SKM, as well as gave the Royal Manticoran Navy the right to maintain a fleet base and navy picket orbiting Gregor A as well as a system of forts guarding the terminus itself, under the control of Gregor Defense Command. The Empire gained sovereignty over the rest of the system. (HH6, HH10)