 Louis, son of Charles the Simple and Edmund's half-sister Eadgifu, had resided at the West-Saxon court for some time until 936, when he returned to be crowned King of France.In the summer of 945, he was captured by the Normans and subsequently released to Duke Hugh the Great, who held him in custody.The chronicler Richerus claims that Eadgifu wrote letters both to Edmund and to Otto I, Holy Roman Emperor in which she requested support for her son.