Research Notes:

"Eadmundus regis frater" subscribed charters of King Æthelstan dated 931 and 939, under the latter also being the grantee of land at Droxford, Hampshire. He fought with his half-brother King Æthelstan at Brunanburh in 937. He succeeded his half-brother in 939 as EDMUND King of Wessex, crowned 29 Nov 939 at Kingston-upon-Thames. Olaf Guthfrithson King of Dublin invaded England in 939 and by the end of that year had occupied York. In raids on northern Mercia the following year, King Olaf took Tamworth and nearby land, and under a treaty agreed with King Edmund took the whole of modern Leicestershire, Derbyshire, Nottinghamshire and Lincolnshire. King Olaf continued by invading Northumbria over the Tees, but died before the end of 940. King Edmund regained the lost territories from Olaf's successor Olaf Sihtricson in 942. King Edmund brought Northumbria under his control in 944, expelling both Olaf Sihtricson and Rægnald Guthfrithson from York. From that time he may be regarded as king of a united England. He ravaged Strathclyde in 945. The Anglo-Saxon Chronicle records the death on St Augustine's day 946 of King Edmund. Simeon of Durham records that King Edmund was killed "VII Kal Jun" in 946 and buried at Glastonbury. Florence of Worcester records that he was stabbed to death by Leof "a ruffianly thief" while attempting to defend his steward from being robbed.¹