Ælfthryth, wife of Edgar the brother of Ælfthryth's first husband, Æthelwine, Ealdorman of East Anglia. Supporting the unsuccessful claim of Æthelred were his mother, the Queen dowager, Bishop Æthelwold of Winchester, and Ælfhere, Ealdorman of Mercia. On 18 March 978, while visiting Ælfthryth at Corfe Castle, King Edward was killed by servants of the Queen, leaving the way clear for Æthelred to be installed as king. Edward was soon considered a martyr, and later medieval accounts blamed Ælfthryth for his murder. According to the "Anglo-Saxon Chronicle", King Edward was murdered at Corfe Castle in 978. As the king developed into a cult figure, a
Alfonso Enríquez, Count of Gijón and Noreña of the stipulations of the treaty was the marriage of Alfonso Enríquez with Isabel of Portugal, a natural daughter of King Ferdinand I, who at that time was about nine years old. Alfonso's father, King Henry II, died in May 1379 and was succeeded by his first-born son who reigned as John I of Castile. In the spring of 1381, King John I was preparing to go to war with Portugal. His half-brother, Alfonso Enríquez, knowing that all the soldiers from Asturias were away from the region, offered England, an ally of Portugal, the harbor of Gijón. Upon hearing this,