Víga-Glúms saga ( listen ) is one of the Sagas of Icelanders. It takes place mostly in and around Eyjafjörður in North Iceland, and recounts the life and fall of Glúmr Eyjólfsson, a powerful man whose nickname, Víga, refers to his propensity for killing people. It is believed to have been written in the first half of the 13th century and one passage may allude to a political scandal of that time.
Glúm's grandfather, Ingjald, was a son of Helgi inn magri (the Lean), the settler of Eyjafjörður, and farmed at Þverá (later the site of Munkaþverá monastery). Glúmr is the youngest son of his son Eyjólfr, and initially unpromising. After Eyjólfr's death, his second son also dies and soon after that his infant grandson, and the son's wife inherits half the farm; her father, Þorkell enn hávi (the Tall), and his son Sigmundr take the half where the house is and start to encroach on the half where Glúmr and his widowed mother Astrid live. Glúmr goes to Norway to visit his maternal grandfather, the chieftain Vigfúss, who warms to him after he defeats a marauding berserker, and presents him with three family heirlooms, a black cloak, a gold-inlaid spear and a sword, saying that he will prosper as long as he keeps them. Meanwhile, Sigmundr has been pressuring Astrid to leave her land, the boundary fence has been moved, and Þorkell and Sigmund have accused two reliable farmhands of Astrid's of slaughtering two of their cattle, and in settlement of a court case about this, deprived her of her right to farm a famously ever-fertile field, Vitazgjafi, which the two halves of the family had been working in alternate years. (The two carcasses are later found trapped under a snowdrift.) When Glúmr returns, he speaks the first of several skaldic verses about the injustice, beats cattle belonging to Þorkell and Sigmund that are loose on his and his mother's land, and laughs uncontrollably, which we are told he was in the habit of doing when the killing mood came on him. He then goes out to Vitazgjafi when Sigmund is mowing hay there, has Sigmund's wife sew him a replacement fastening for his cloak, then kills Sigmund with the spear.