Little is known about the circumstances of the composition of Beowulf: not only is the author unknown, but scholars are in wide disagreement about when the poem was written. Until a generation ago the prevailing opinion was that a date somewhere in the eighth century was likely, but dates in the range of the seventh to the tenth centuries have been proposed. This makes any detailed investigation of the authors cultural and literary background problematic. However, much more is known about the unique surviving copy of Beowulf; while the poem is concerned with events in pagan Scandinavian history and legend, it survives in a manuscript of English origin, written in the early eleventh century. These facts could argue for either an early or late date of composition; England in the early eleventh century was ruled by the Danish king Cnut, which, if the early-eleventh-century date of authorship is accepted, could help to explain the poems distinctly pro-Danish quality. But the Danish subject matter also fits with an eighthcentury date, when relations between the English and the Danes were cordial, due primarily to their shared linguistic and cultural past, and active trade.