Is Grendel Hrothgar’s son?
Grendel is a character in the poem Beowulf, preserved in the Nowell Codex. Grendel, being cursed as the descendant of the Biblical Cain, is “harrowed” by the sounds of singing that come every night from the mead-hall of Heorot built by King Hrothgar. He is unable to bear it any more and attacks Heorot.