Edmund Ironside or Edmund II (Old English: Eadmund II Isen-Healf; c. 988/993 – 30 November 1016) is king of England from 23 April to 18 October 1016 and of Wessex from 23 April to 30 November 1016.
His cognomen "Ironside" is not recorded until 1057, but may have been contemporary.
According to the Anglo-Saxon Chronicle, it was given to him "because of his valor" in resisting the Danish invasion led by Cnut the Great.
He fights five battles against the Danes, ending in defeat against Cnut on 18 October at the Battle of Assandun, after which they agree to divide the kingdom, Edmund taking Wessex and Cnut the rest of the country.
Edmund dies shortly afterwards on 30 November, and Cnut becomes the king of all England.
