Ireland

Charles Kickham, Fenian, novelist, and author of Knocknagow, is born in Mullinahone, Co. Tipperary

Patrick Cleburne, American Civil War Confederate General, is born in Cobh, Co. Cork

Major-General Patrick Ronayne Cleburne ( March 16, 1828 – November 30, 1864) was a senior officer in the Confederate States Army who commanded infantry in the Western Theater of the American Civil War.

Cavan-born Thomas Baron von Brady, general in the Austrian army, dies in Vienna

Michael Corcoran, Union General, is born in Co. Donegal

Mary King Ward, Irish naturalist and astronomer is born

Henry Smith, mathematician, born in Dublin

Charles Cornwallis Chesney, professor of military history, is born in Kilkeel, Co. Down

Rene T.H. Laennec, Breton inventor of the stethoscope, died

René-Théophile-Hyacinthe Laennec, the French physician who invented the stethoscope, died on August 13, 1826. Born on February 17, 1781, in Quimper, Brittany, Laennec made groundbreaking contributions to the field of medicine, particularly in the study of diseases of the chest.

Explorer Alexander Gordon Laing became the first Christian to reach Timbuctu, Africa.

Alexander Gordon Laing, a Scottish explorer, became the first European Christian to reach the fabled city of Timbuktu (also spelled Timbuctu) in West Africa on August 18, 1826. His journey was a significant achievement in the age of exploration, but it also ended in tragedy.

Frederick Blackwood, 1st Marquess of Dufferin and Ava, diplomat and holder of estates at Clandeboye, Co. Down, is born in Florence