October 17, 1171Henry II, Fearful That Strongbow Will Grow Too Powerful in Ireland, Lands at Waterford With an Army
October 17, 1738In a Duel at Mullingar, Arthur Rochfort, MP for Co. Westmeath, Shoots Dillon Pollard Hampson in the Stomach, He Recovers
October 17, 1850James Paraffin Young Obtained a Patent for the Extraction of Paraffin From Shale, Starting the Chemical Industry in West Lothian.