inflicts not only a decisive defeat on the Bulgaria n army, but his subsequent savage treatment of 15,000 prisoners reportedly causes TsarSamuil Of Bulgaria to die of shock, and earns Basil II the title 'Voulgaroktonos' (Bulgar-slayer).
Battle Of Clontarf ; Gaelic Irish forces under Brian Boru defeat several allied Viking forces in Ireland , ending their power there but killing Brian in the process