Edmund I of the Midlands, Northumbria, and Strathclyde (the last of which was ceded to Malcolm I of Scotland). Edmund was assassinated after six-and-a-half years as king, while attending Mass in Pucklechurch, Gloucestershire. He was initially succeeded by his brother Eadred, but his two sons – Eadwig and Edgar the Peaceful – both later came to the throne. Edmund came to the throne as the son of Edward the Elder, and therefore the grandson of Alfred the Great, great-grandson of Æthelwulf of Wessex and great-great grandson of Egbert of Wessex, who was the first of the house of Wessex to start dominating
Æthelwold ætheling sons in succession. King Æthelbald died in 860, and King Æthelberht in 865; Æthelwold's father, Æthelred, then succeeded to the throne. In the same year the Viking Great Heathen Army invaded England. Within five years they had conquered Northumbria and East Anglia, and forced Mercia to buy them off. In late 870 the Vikings invaded Wessex, and in early 871 they fought armies under Æthelred and Alfred in four battles in quick succession, the last two of which Wessex lost. Æthelred died shortly after Easter that year, leaving young sons. Primogeniture was not established in this period, and it was