Battle of Clontarf - 1. Clondalkin and Kilmainham were plundered, Brian&#39;s son Donnchad (Donough) sacked Leinster (1014); 2. Brian&#39;s forces began war, camped near Kilmainham; 3. Finegall and Howth were plundered; 4. Vikings left Dublin to engage Brian; 5. Overseas Viking fleet arrived; 6. Battle of Clontarf; 7. Retreat of Vikings, some drowned in the sea, some forced through  Dubgall&#39;s Bridge and were attacked again, a few returned to Dublin; 8. Brodar&#39;s possible route, killed Brian and was killed himself; 9. Brian&#39;s remains to Swords, then to Armagh.