Count Daniel O'Connell, a Soldier in French and British Services, Is Born in Derrynane, Co. Kerry

May 21, 1745

Battle of Fontenoy, the Irish Brigade of the French army under Lieutenant Charles O'Brien repulses the British and wins the day

Lord John Allen (3rd Viscount Allen), former MP for Carysfort, dies of a fever caused from cuts to his fingers inflicted by the sword of a dragoon