The "Finnesburg Fragment" (also "Finnsburh Fragment") is a portion of an Old English heroic poem in alliterative verse about a fight in which Hnæf and his 60 retainers are besieged at "Finn's fort" and attempt to hold off their attackers. The surviving text is tantalisingly brief and allusive, but comparison with other references in Old English poetry, notably Beowulf (c. 1000 AD), suggests that it deals with a conflict between Danes and Frisians in Migration-Age Frisia (400 to 800 AD).