Borgarrike

Borgarrike (also spelt as Frostariki and Frostaríki, and originally named Borgarthing, also spelt Borgarþing or Borgarting) was a region and jarldom (i.e. administrative division) of Stormark in what is today the eastern part of northern Lyrica. It thus corresponds to eastern Lake District and the eastern part of North Lyrica. It bordered Frostarike in the west. Its capital was Köpingsvik, corresponding to Dorwynne, though until Kaupang's transfer to Frostarike, Kaupang was the most important and populous city in the jarldom.

Jarls

• 1566–1567: Vilhelm Estridson Knytling
• 1614–1652: Vilhjalm Kormak