Pipe rolls now in the Cotton Library at the British Museum. Exactly when the Pipe rolls began to be produced is debated amongst historians. Some hold that they date from Henry I's reign, whether early or late in the reign, but others feel that they were introduced by King William I (reigned 1066–1087). The precursors of the records probably date to the Anglo-Saxon period, as the historian Pauline Stafford argues that financial records must have been kept in some form during the reigns of Cnut (reigned 1016–1035), Æthelred II (reigned 978–1016), and Edgar the Peaceable (reigned 959–975). There is a reference to
Edgar, King of Scotland Scotland, son of Malcolm III and his first wife Ingibiorg Finnsdottir. A note in the Annals of Ulster claims that Duncan II was murdered by his brothers Donmall [Donald] and Edmund. As Duncan had no brothers by these names, the text probably points to his uncle Donald III and half-brother Edmund of Scotland, though later texts identify a noble by the name of Máel Petair of Mearns as the actual murderer. Edgar, King of Scotland Edgar or Étgar mac Maíl Choluim (Modern Gaelic: "Eagar mac Mhaoil Chaluim"), nicknamed Probus, "the Valiant" (c. 1074 – 8 January 1107), was King of