Wolf the Quarrelsome
is described in Njals Saga
as a brother (or sometimes identified as stepson) to Brian Boru
, High King of Ireland
from 1002 to 1014. He is primarily mentioned in Njals saga's account of the Battle of Clontarf
, in the aftermath of which he gruesomely killed Brodir
of the Isle of Man
to avenge his brother's death at the hands of the invaders:
Wolf the Quarrelsome cut open his belly, and led him round and round the trunk of a tree, and so wound all his entrails out of him, and he did not die before they were all drawn out of him.
Some have identified Wolf as a brother of Brian named Cuiduligh. There is no historical evidence from the annals that Wolf is anything more than a fictional figure from Njals saga.