The name of the Danish warrior who taunted Beowulf out of jealousy is Unferth. He is a warrior in King Hrothgar's court who challenges Beowulf's boasting.
he is jealous
Unferth because he was jealous of his men admiring Beowulf
Hunferth dislike Beowulf because he was jealous of the favor shown by the King (Hrothgar) to Beowulf . Upon seeing this, Hunferth could not bear that any man on earth should obtain greater honor than him.
Unferth is allowed to speak to Beowulf that way because he is questioning Beowulf's accomplishments and challenging his reputation as a great warrior. His remarks are meant to test Beowulf's confidence and to assert his own position in front of their peers. It is a way for Unferth to establish his own presence and to potentially discredit Beowulf.
Unferth gives Beowulf an ancient sword
well at first unferth calls Beowulf a poppycock hero and that he wont defeat grendel, but that's because he was drunk, after Beowulf defeats grendel then unferth apalogizes to Beowulf and gives him a sword.
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.
Unferth
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.
Unferth gave Beowulf an ancient sword called Hrunting to battle Grendel's mother.
In the poem "Beowulf," Unferth serves as a foil to Beowulf, highlighting Beowulf's courage and nobility through his own shortcomings and envy. Unferth's skepticism and criticism of Beowulf contribute to the hero's characterization and the overall theme of heroism in the poem.