dmund suceeded his half-brother Athelstan in 940. He conquered Mercia and the "Five Boroughs" of the Danish confederacy in 941 or 944. He also defeated Cumbria which he entrusted to King Malcolm of Scotland. Edmund was killed by a robber or an outlaw at Pucklechurch and succeeded by his brother, Edred. {Burkes Peerage and Chambers Biographical Dictionary} [GADD.GED]
Edmund I, the Magnificent (c. 922-46), succeeded his half-brother Athelstan as king of England in 940. Consult Greens Conquest of England. [World Wide Illustrated Encyclopedia, 1935]
"The Magnificent" King of England 939 till murdered 946. Also have birth date of 922. [ROWLEYHR.GED]
Edmund I (921-46), Saxon king of the English (939-46), the son of King Edward the Elder. He participated in the Battle of Brunanburh in 937 and succeeded his half brother Athelstan as king in 939. The following year Olaf Godfreyson, a Viking ruler of Dublin, seized the territory of Northumbria in northern England and extended his rule as far south as Leicester. After Olaf's death in 941, Edmund made war on the Vikings, expelling them from the country three years later. In 945 Edmund occupied the kingdom of Strathclyde, west of Northumbria, and turned it over to his ally Malcolm I MacDonald, king of Scotland. The following year Edmund was stabbed to death by a robber and was succeeded by his brother Edred (reigned 945-55). Edmund was known as a legal reformer, especially for his restrictions on the blood feud. [Microsoft Encarta 98 Encyclopedia]
Additional information: Britannia.com