Hugh ONeill

Hugh O'Neill, Earl of Tyrone, defeated an English army under Sir Henry Bagenal at Clontibret in County Monaghan. This victory marked the beginning of the Nine Years' War, establishing O'Neill as the leader of the Irish resistance against English rule.

O'Neill's forces ambushed and destroyed an English army under Sir Henry Bagenal at the Yellow Ford on the River Blackwater. The English suffered over 800 casualties, and Bagenal was killed, marking the greatest Irish victory of the war.

O'Neill and his Spanish allies were decisively defeated by English forces under Lord Mountjoy at Kinsale. The defeat ended Spanish support for the Irish rebellion and forced O'Neill to retreat to Ulster, leading to the collapse of the Irish confederation.

O'Neill submitted to the English crown under the Treaty of Mellifont, ending the Nine Years' War. He was pardoned and allowed to keep his lands, but in 1607 he fled Ireland with other Gaelic lords in the Flight of the Earls, never to return.