In 892, two Viking armies attacked eastern England, and Æthelred took part in the defence. After the defeat of one Viking leader, Hastein, Alfred became godfather to one of Hastein's two sons and Æthelred to the other. Soon afterwards, the English captured Hastein's wife and children, but they were returned to him because the sons were godsons of the English leaders. In 893, Æthelred brought troops from London to join Alfred's son Edward against a Viking army at Thorney in Buckinghamshire, but the Vikings were too strong for a direct attack so they were allowed to leave English territory. Later in the year, a larger Viking force marched from Essex through Mercia to the Welsh border, followed by Æthelred with a joint force of Mercians and West Saxons. Welsh kings joined Æthelred to meet the Vikings at the Battle of Buttington, where according to Smyth "these invaders were utterly routed ... in what was the most decisive battle in the war", although Marios Costambeys states that the Vikings eventually cut their way out and retreated back to Essex. The Viking army finally dispersed in 896. For much of the time, Alfred had been in the west country defending Devonshire, and in the view of Richard Abels: "King Alfred had little to do directly with the great victories enjoyed by the English in 893–896. His son, Edward, and his ealdormen, in particular his son-in-law, Æthelred, had won the glory."