August 21, 1689Battle of Dunkeld When the Newly Formed Cameronians Defended the Town Against, 3,000 Highlanders.
August 21, 1754Birth of William Murdoch Who Pioneered the Use of Coal-Gas Lighting In, 1792 in Partnership With James Watt and Mathew Boulton.
August 21, 1791Birth of the Word Quiz (Allegedly and Disputed). Richard Daly, a Theatre Proprietor in Dublin
August 21, 1855Last Ever Donnybrook Fair, Held in Dublin Since 1204. the General Uproar of the Annual Event Results in Its Suspension
August 21, 1861Birth in Belfast of Frederick Crawford, Militant Unionist and Organizer of Larne Gun-Running
August 21, 1882Birth in Gloucester of Arthur Luce, a Professor of Philosophy and Fellow of Trinity College in Dublin for 65 Years
August 21, 1930Princess Margaret, Daughter of the Future King George VI and Queen Elizabeth, Born at Glamis Castle
August 21, 1937Birth of Donald Dewar, Former Secretary of State for Scotland and First Minister in the New Scottish Parliament.
August 21, 1981Michael Devine, Irish Political Prisoner, Dies on Hunger Strike in Maze Prison, Northern Ireland.