The unique manuscript of Beowulf, the oldest surviving epic poem in Old English, was copied around 1000 CE, though the poem itself likely originated earlier through oral tradition. The manuscript, now known as Cotton Vitellius A.xv, preserves this 3,182-line alliterative verse narrative about the Geatish hero Beowulf's battles against Grendel, Grendel's mother, and a dragon.

Beowulf represents the culmination of Germanic heroic poetry tradition, preserving pre-Christian mythological elements within a Christian framework that reflects England's religious transition. Its alliterative verse form and kenning-based diction influenced later Old English poetry and were revived by modern poets seeking alternatives to rhyme-based verse. The poem's exploration of heroism, mortality, and community values provides essential context for understanding medieval English literary culture and its Germanic roots.