Unferth killed his brother out of jealousy and resentment towards him. He wanted to eliminate his competition and prove himself as the superior sibling.
No, Beowulf's mother does not kill Unferth in the epic poem Beowulf. Beowulf defeats Grendel's mother in battle, but Unferth is a Danish warrior who is not directly involved in that fight.
Beowulf accuses Unferth of a bad crime in committing fratricide, the murder of his own brother. Unferth's past act of killing his kin is brought up by Beowulf to challenge Unferth's credibility and honor during their exchange in the mead hall.
Unferth gives Beowulf an ancient sword
The name of the sword is Hrunting. It was given to Beowulf by Unferth (lines 1455-1458).
Arthur's brother in 'To Kill a Mockingbird' is Nathan Radley.
Al Capone tried to kill some of his sisters but not his brother
If the question is who did Grendel NOT want to kill the answer is Hrothgar, The Shaper, and Unferth.
Fratricide is the killing of a brother. One might kill a brother because of hatred or jealousy. One might kill a brother in self defense. One might kill a brother because of alcohol or drugs or a psychotic episode.
Beowulf did not tell Unferth a specific lie. He rather criticized Unferth's own past actions and confronted him about his failures in battling Grendel, challenging his bravery and heroism.
Unferth
Ecglaf
Beowulf puts down Unferth by recounting his own heroic deeds and challenging Unferth's courage and actions. Beowulf compares Unferth's failures to his own successes, asserting his superiority as a warrior. This exchange serves to highlight Beowulf's bravery and leadership qualities.