 Assuming that Domhnall is not the " dead man at Ballyshannon " , the date of Domhnall 's death cannot be fixed . MacDonald tradition placed it in 1289 , a tradition usually rejected by modern historians as falling far too late . R. Andrew McDonald suggested that Domhnall 's death must have taken place before 1263 , when King Haakon collected the allegiance of Aonghus Mór in the Hebrides . Alex Woolf argued that it very likely must have occurred before February 1256 , when Domhnall 's son Aonghus Mór made a grant to Paisley Abbey is his own name as " Lord of Islay " , suggesting at the very least that Domhnall had retired . 
