Romerike is a landscape, and historically a kingdom, located north-east of Oslo, in what is today south-eastern Norway. It consists of the municipalities
Enebakk, Fet, Gjerdrum, Lørenskog, Nittedal, Rælingen, Skedsmo and Sørum in the southern end (Nedre Romerike), and
Ullensaker, Gjerdrum, Nannestad, Eidsvoll and Hurdal in the northern end (Øvre Romerike).
History
Before Harald Fairhair, Romerike (Old Norse Raumaríki) was a petty kingdom. It had its age of greatness between the 5th century and the 7th century. King Haralds father, Halfdan the Black, subdued the area by defeating and killing Sigtryg, the previous ruler, in battle. He then defeated Sigtryg's brother and successor Eystein in a series of battles.
The centre of the kingdom was Sand between Jessheim and Garder , where the earliest settlements were situated and where the soil was easy to cultivate. In the sourrounding forests there was rich game. Its name may be derived from the Raum elfr an old name for the Glomma river.
Jordanes
The 6th century Goth scholar Jordanes wrote in his Getica about a tribe located in Scandza which he named the Raumarici and which seems to be the same name as Raumariki, the old name for Romerike.
In Beowulf
In Beowulf, the tribe is mentioned as the warlike Heaðo-Reamas (i.e. battling Reamas, for the correspondence between Reamas and Raumar compare Geatas and Gautar).
In Hversu Noregr byggdist and in Thorsteins saga Víkingssonar
In the Hversu Noregr byggdist and in Thorsteins saga Víkingssonar, the name is attibuted to the mythical king Raum the Old.
In the Heimskringla
Snorri Sturluson relates in his Heimskringla that it first accepted the rule of the semi-legendary Swedish kings, Sigurd Ring and Ragnar Lodbrok and later of Erik Emundsson. However, it was forcibly conquered by Harald Fairhair who had to spend a summer to lead it into the fold of his newly created kingdom of Norway.