Grendel's mother

In the Old English epic Beowulf (preserved in the Nowell Codex, c. 700–1000 AD) she appears only within the narrative as the mother of Grendel and as part of the poem's catalogue of Cain-descended foes. After Beowulf kills Grendel, she attacks the mead-hall Heorot in revenge for her son. Beowulf pursues her to a cave beneath a lake, engages her in fierce combat, and ultimately kills her with an old/ancient sword found in her lair. The poem does not give her a personal name beyond the relational designation “Grendel's mother,” and scholarly commentary emphasizes ambiguity in the manuscript epithets attached to her (notably ides and aglæcwif), which have produced varied readings of her status as monstrous, supernatural, or a kin-avenger acting within heroic norms.

The poem provides no detailed, canonical physical description. The manuscript applies Old English epithets (notably ides and aglæcwif/æglæca) whose meanings are debated: ides is cognate with Old Norse dís and can mean “lady” or a type of supernatural female figure, while aglæcwif/æglæca has been variously translated as monster, demon, or warrior/hero in different contexts. Later artistic and modern cultural depictions exist but are post-medieval and not evidence for the poem's original physical portrayal.

Within the poem she is capable of purposeful vengeance (attacking Heorot after her son's death), of fierce physical combat (she nearly kills Beowulf in her lair), and of dwelling in an underwater cave which Beowulf must enter to confront her. The narrative records no explicit supernatural powers beyond these martial and situational capacities; she is ultimately slain by Beowulf who uses an ancient/gifted sword found in her hall.