Although the battle is said to be the most important between the early northern and southern divisions of the Anglo-Saxons in Britain, few details are available. The two armies met near a river named the "Winwæd", but this river has never been identified. Since, after the battle, Oswiu concludes his campaign in the district of "Loidis" (which gives its name to the modern West Yorkshire city of Leeds), the Winwæd is usually thought to have been near Leeds and/or a tributary of the Humber. Andrew Breeze argued for the River Went, a tributary of the River Don, situated to the north of modern-day Doncaster. Other identifications include the river now known as Cock Beck, Leeds (which has inspired the modern housing estate name Pendas Fields), before joining the River Wharfe (which eventually feeds into the Humber). Wilder speculations include Oswestry or Winwick.