Grendel's mother

Grendel's mother (Old English: Grendles mōdor) is one of three antagonists in the anonymous Old English poem Beowulf (c. 700–1000 AD). The other antagonists are Grendel and the dragon, all aligned in opposition to the hero Bēowulf. She is introduced in lines 1258b to 1259a as: "Grendles modor/ides, aglæcwif".

Grendel's mother, who is never given a name in the text, is the subject of ongoing controversy amongst medieval scholars. This is due to the ambiguity of a few words in Old English which appear in the original Beowulf manuscript. While there is consensus over the word "modor" (mother), the phrase "ides, aglæcwif" is the subject of scholarly debate.

Story
The poem, Beowulf, is contained in the Nowell Codex. As noted in lines 106–114 and lines 1260–1267 of Beowulf, monsters (which include Grendel's mother and Grendel) are descendants of Cain. After Grendel is killed, Grendel's mother attacks Heorot in revenge. Beowulf then ventures into her cave under a lake, and engages in fierce combat with Grendel's mother. She nearly kills him until he sees an ancient sword, with which he kills her, and beheads the dead Grendel. Beowulf then returns to the surface and to his men at the "ninth hour" (l. 1600, "nōn", about 3 pm).