Explosion at Clarkston Toll shopping centre, killing, 12.
October 20, 1971
Birth near Castleblaney, Co. Monaghan of General Eoin O’Duffy, first commissioner of the Garda Síochána (Blue Shirts)
October 20, 1892
The Land League is outlawed
October 20, 1881
Michael William Balfe, composer, dies in Dublin
October 20, 1808
Duel between John Gustavus Crosbie and Sir Barry Denny, the sitting MP, the first fire Denny is shot fatally
October 20, 1794