Thorkell the Tall swept into his kingdom after a daughter of Harald Bluetooth was killed when this brother of Edward the Martyr issued an extraordinarily unwise order to slaughter all Danes in England, triggering the (*) St. Brice's Day Massacre.
Pope John XV forced this man to open diplomatic ties with Normandy, and he was extorted following the Battle of Maldon by Olaf Tryggvsason. Thorkell the Tall swept into his kingdom after a daughter of Harald Bluetooth was killed when this brother of Edward the Martyr issued an extraordinarily unwise order to slaughter all Danes in England, triggering the (*) St. Brice's Day Massacre. This man fathered Edward the Confessor and Edmund Ironside, who was beaten by Canute after this man was deposed by Sven Forkbeard. For 10 points, identify this English king whose manipulation by the Witenagemot inspired his epithet, which actually suggests poor counsel rather than unpreparedness.
Pope John XV forced this man to open diplomatic ties with Normandy, and he was extorted following the Battle of Maldon by Olaf Tryggvsason.
{Aethelred II} [or {Aethelred} the {Unready}]