Lormark or the North March is a disputed region in Upper Aedirn north of the river Dyfne which Henselt of Kaedwen takes during the Nilfgaard-Kaedwen division of Aedirn, early on in the Second Northern War with Nilfgaard. The Peace of Cintra, however, restored it to Aedirn.
The Witcher 2: Assassins of Kings, Lormark is once again the subject of dispute between Henselt and Aedirn. In the game, if Geralt aligns himself with Iorveth, Vergen manages to repel the Kaedweni aggressors and Saskia with her advisor Philippa and Henselt agree to a truce. Upper Aedirn is formed with Saskia as the head of the nation.
Upper Aedirn has valuable resources such as coal, silver mines, numerous factories, and white marble.
- The part of Aedirn that lies between the Pontar and Dyphne rivers is called Lormark or Upper Aedirn, depending on the interested party's political persuasion. These lands have been disputed for ages, with Kaedwen laying claim to them as well. During the last war with Nilfgaard, Aedirn found itself in deep trouble, fighting an uneven battle to repel the onslaught of the Black Ones in the south. Sensing that its southern neighbor would ultimately bow to the invaders, Kaedwen, Aedirn's ostensible ally in that conflict, sent its armies into Lormark, annexing the region. Several days later Margrave Mansfeld of Ard Carraigh and Marshal Menno Coehoorn, commander-in-chief of the Nilfgaardian army, greeted each other on a bridge spanning the Dyphne River. They shook hands over the bleeding, tortured corpse of the Kingdom of Aedirn, sealing – let us not mince words – a criminal partitioning of plundered lands. And even though Kaedwen restored Lormark to Aedirn after the war, its taking of the territory with Nilfgaardian support was one of the most disgraceful acts in history – though I venture to say it was probably not the only or last act of its kind.