Lancaster was settled by Scots-Irish refugees from the Stewart Confederacy in 2305, only to find their homes threatened by the Protectorate of Donegal in 2346. Given a choice between joining the Protectorate willingly or being forced to do so, the new generation of embittered ex-Confederates chose instead to up-ship and take off for parts unknown.
 A trade dispute between rival cartels on Lancaster flared up in 3046. This threatened to escalate out of hand when each side hired mercenaries, so the Carlisle APM was deployed as a neutral party. Initially, their purpose was to monitor the situation, but when both sides refused to heed the Lyran calls for mediation, monitoring became enforcement and the APM intervened in the conflict. They separated the disputants and met any mercenary infractions with force.