The strange poem of "Beowulf,"[55] the most important monument of Anglo-Saxon literature, was discovered at the end of the last century, in a manuscript written about the year 1000,[56] and is now preserved in the British Museum. Few works have been more discussed; it has been the cause of literary wars, in which the learned men of England, Denmark, Sweden, Germany, France, and America have taken part; and peace is not yet signed. This poem, like the old Celtic tales, is a medley of pagan legends, which did not originally concern Beowulf in particular,[57] and of historical facts, the various parts, after a separate literary life, having been put together, perhaps in the eighth century, perhaps later, by an Anglo-Saxon Christian, who added new discrepancies in trying to adapt the old tale to the faith of his day. No need to expatiate on the incoherence of a poem formed of such elements. Its heroes are at once pagan and Christian; they believe in Christ and in Weland; they fight against the monsters of Scandinavian mythology, and see in them the descendants of Cain; historical facts, such as a battle of the sixth century, mentioned by Gregory of Tours, where the victory remained to the Frankish ancestor,[58] are mixed up with tales of fantastic duels below the waves. According to a legend partly reproduced in the poem, the Danes had no chief. They beheld one day a small ship on the sea, and in it a child, and with him one of those ever-recurring treasures. They saw in this mysterious gift a sign from above, and took the child for their ruler; "and he was a good king." When that king, Scyld, died, they placed him once more on a bark with treasures, and the waters bore him away, no one ever knew whither. One of his successors, Hrothgar,[59] who held his court, like the Danish kings of to-day, in the isle of Seeland, built in his old age a splendid hall, Heorot, wherein to feast his warriors and distribute rings among them. They drank merrily there, while the singer sang "from far-off ages the origin of men." But there was a monster named Grendel, who lived in the darkness of lonely morasses. He "bore impatiently for a season to hear each day joyous revelry loud-sounding in the hall, where was the music of the harp, and the clear piercing song" of the "scop." When night came, the fiend "went to visit the grand house, to see how the Ring-Danes after the beer-drinking had settled themselves in it. Then found he therein a crowd of nobles (aethelinga) asleep after the feast; they knew no care."[60] Grendel removed thirty of them to his lair, and they were killed by "that dark pest of men, that mischief-working being, grim and greedy, savage and fierce." Grendel came again and "wrought a yet worse deed of murder." The thanes ceased to care much for the music and glee of Heorot. "He that escaped from that enemy kept himself ever afterwards far off in greater watchfulness."