Grendel's mother (Old English: Grendles mōðor) is one of three antagonists (along with Grendel and the dragon) in the anonymous Old English poem Beowulf (c. 700–1000 AD). 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 among 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.