sentences:  Amlaíb shared the throne with his nephew Ragnald (Rögnvaldr), son of Gofraid.There are indications that Wulfstan, Archbishop of York and a leading statesman in Northumbrian politics, played a key role in Amlaíb's support, although he would later change his mind (see below).In 942 Edmund struck back with a recapture of Mercia and the Five Boroughs of Danelaw, which so impressed contemporaries that a poem was written in honour of the achievement and included in the "Chronicle".