[@chayden13] Indeed the clans do have a separate religion and a different language if you wish. Also on the subject of the clans hating the De Reimer family, another reason could be this: Originally the mountains of Cawanor were home to a clan called 'The Risen'. The Risen clan were a clan of inhumanely large tribesmen who were famed for their height and strength. As the mining operations of Cawanor moved deeper into the mountains the clan started to attack the miners as they were infringing on their land, leading to a war between the kingdom of Cawanor and the risen tribesmen. Though the risen clan put up a worthy fight they were betrayed by the clan leaders eldest son (Ulf) and were wiped out by the traitors who sided with Ulf and the Cawanor military. The traitors were given massive amounts of gold and now serve as bodyguards in Cawaport for Patrick. The leader Ulf became Isabel De Reimer's personal bodyguard.

The risen clan could have been on good terms with the Forrest clans given them another good reason for hating the De Reimers.