The location of Brunanburh is unknown, but some historians have suggested a location between Tinsley in Sheffield and Brinsworth in Rotherham, on the slopes of White Hill. After the death of King Athelstan in 939 Olaf Guthfrithson invaded again and took control of Northumbria and part of Mercia. Subsequently, the Anglo-Saxons, under Edmund, re-conquered the Midlands, as far as Dore, in 942, and captured Northumbria in 944. The Domesday Book of 1086, which was compiled following the Norman Conquest of 1066, contains the earliest known reference to the districts around Sheffield as the manor of "Hallun" (or Hallam). This manor retained its Saxon lord, Waltheof, for some years after the conquest. The Domesday Book was ordered written by William the Conqueror so that the value of the townships and manors of England could be assessed. The entries in the Domesday Book are written in a Latin shorthand; the extract for this area begins: TERRA ROGERII DE BVSLI M. hi Hallvn, cu XVI bereuvitis sunt. XXIX. carucate trae Ad gld. Ibi hb Walleff com aula... Translated it reads: LANDS OF ROGER DE BUSLI In Hallam, one manor with its sixteen hamlets, there are twenty-nine carucates [~14 km2] to be taxed. There Earl Waltheof had an "Aula" [hall or court]. There may have been about twenty ploughs. This land Roger de Busli holds of the Countess Judith. He has himself there two carucates [~1 km2] and thirty-three villeins hold twelve carucates and a half [~6 km2]. There are eight acres [32,000 m2] of meadow, and a pasturable wood, four leuvae in length and four in breadth [~10 km2]. The whole manor is ten leuvae in length and eight broad [207 km2]. In the time of Edward the Confessor it was valued at eight marks of silver [£5.33]; now at forty shillings [£2.00].In Attercliffe and Sheffield, two manors, Sweyn had five carucates of land [~2.4 km2] to be taxed. There may have been about three ploughs. This land is said to have been inland, demesne [domain] land of the manor of Hallam.The reference is to Roger de Busli, tenant-in-chief in Domesday and one of the greatest of the new wave of Norman magnates. Waltheof, Earl of Northumbria had been executed in 1076 for his part in an uprising against William I. He was the last of the Anglo-Saxon earls still remaining in England a full decade after the Norman conquest. His lands had