Edmund I, the Magnificent
940– 946
House of Wessex

Edmund was the son of Edward the Elder and his third wife Edgith. He was the half-brother of Athelstan and succeeded him, Athelstan having died without heirs. He fought alongside his half-brother at the Battle of Brunanburgh in 937. After Athelstan's death, he fought against Olaf Guthfrithson who had retaken York. A peace was eventually agreed upon between the Archbishop of Canterbury and Olaf's ally Wulfstan, the Archbishop of York in which they made Watling Street the border between Wessex and York. Upon Olaf's death in 941, raiding in Northumbria, Edmund took the Five Boroughs of the East midlands from Olaf Sigtryggson, Olaf Guthfrithson's successor. Edmund put down a Welsh rebellion from Idwal of Gwynnedd and killed Donald Macdonald, the king of Strathclyde. Malcolm I of Scotland was left to oversee Strathclyde once more.

Edmund I was murdered at the age of 25 in 946. He was staying at Pucklechurch in Gloucestershire and was stabbed while trying to intervene in a struggle with an outlaw named Leofa. He was succeeded by his brother Eadred.