Ragnall Guthfrithson

[nb 2][5] There also exists coinage featuring the name of an otherwise unknown Sitric, who may have co-rule Northumbria with Olaf before Ragnall arrived.

A possible explanation for this discrepancy is that Olaf was only driven out of York in 943, and continued to contest Ragnall for Northumbria until the following year.

An account by the chronicler Æthelweard relates that it was Wulfstan, Archbishop of York and an unnamed ealdorman of Mercia who drove out Ragnall and Olaf and forced them to submit to Edmund.

Ragnall's life after 944 is not known with any certainty, although the Annals of Clonmacnoise report in 944 or 945 that "the king of the Danes was killed by the Saxons at York".

Ímar, possibly identical to Ivar the Boneless, was the founder of the Uí Ímair and was one of the earliest kings of Dublin in the mid-ninth century.

[9] In 942 Mac Ragnaill led a raid on Downpatrick, but within a week he was killed by Matudán, Overking of Ulster.