After the dethronement and capture of Charles the Simple in 923, queen Eadgifu and her infant son took refuge in Wessex (for this he received the nickname of d'Outremer) at the court of her father King Edward, and after Edward's death, of her brother King Æthelstan.
In 939 the young monarch attempted to conquer Lotharingia; however, the expedition was a failure and his brother-in-law, king Otto I of East Francia counterattacked and besieged the city of Reims in 940.