So Beowulf dons his armor and seeks out Grendel's mother in her lair, beneath a fetid lake filled with water like acid and so deep no human has ever seen the bottom. Extra History.

It's clear that Grendel and his mother are antagonists in the poem. The poem references that they are descended from Cain, the biblical figure who committed the first murder.

From Saturday, March 8, to Sunday, April 6, guests can sit at the table with Grendel’s mother at The Count’s Den and hear her perspective on the classic tale of “Beowulf.” ...