Sigtryg Eysteinsson was king of the Norwegian

petty kingdom A petty kingdom is a monarchy, kingdom described as minor or "petty" (from the French 'petit' meaning small) by contrast to an empire or unified kingdom that either preceded or succeeded it (e.g. the Heptarchy#List of Anglo-Saxon kingdoms, numerou ...

Raumarike Romerike is a traditional district located north-east of Oslo, in what is today south-eastern Norway. It consists of the Viken municipalities Lillestrøm, Lørenskog, Nittedal, Rælingen and Aurskog-Høland in the southern end (Nedre Romerike), a ...

and

Hedmark Hedmark () was a county in Norway before 1 January 2020, bordering Trøndelag to the north, Oppland to the west, Akershus to the south, and Sweden to the east. The county administration is in Hamar. Hedmark and Oppland counties were merged i ...

in what is today south-eastern Norway. He was killed by Halfdan the Black (''Halvdan Svarte'') in the middle of the 9th century. Halfdan the Black subdued the area by first defeating and killing Sigtryg in battle and then defeated Sigtryg's brother and successor Eystein Eysteinsson in a series of battles.

References

9th-century deaths Norwegian petty kings Year of birth unknown {{Europe-royal-stub