1842 in Ireland

Events from the year 1842 in Ireland.

Events

15 October – The Nation newspaper is founded in Dublin.{{cite book|title=Young Ireland|first=T. F.|last=O'Sullivan|location=Tralee|publisher=The Kerryman Ltd|year=1945}}

6 February – Jeremiah O'Sullivan, Roman Catholic Bishop of Mobile (died 1896).
10 February – Agnes Mary Clerke, astronomer and writer (died 1907).{{cite book|first1=Catharine M C|last1=Haines|first2=Helen M|last2=Stevens|title=International Women in Science: A Biographical Dictionary to 1950|location=Santa Barbara|publisher=ABC-CLIO|year=2001|page=66|isbn=978-1-57607-090-1}}
9 May – William Hone, cricketer (died 1919).
23 August – Osborne Reynolds, engineer and prominent innovator in the understanding of fluid dynamics (died 1912).
3 September – John Devoy, Fenian organiser and exile (died 1928 in the United States).

25 March – William Beatty, ship's surgeon on {{HMS|Victory}} during the Battle of Trafalgar (born 1773).
11 April – John England, first Catholic Bishop of Charleston, South Carolina (born 1786).
8 June – Henry Parnell, 1st Baron Congleton, politician. (born 1776).
12 August – William Corbet, member of the United Irishmen, soldier, Commander-in-Chief to French forces in Greece (born 1779).
21 August – William Maginn, journalist and writer (born 1794).
30 August – John Banim, dramatist and playwright (born 1798).
28 September – Sir Michael O'Loghlen, 1st Baronet, judge, politician and Attorney-General for Ireland (born 1789).
4 October – Lowry Cole, soldier, politician and MP for Enniskillen from 1797 to 1800, Governor of Mauritius and Cape Colony (born 1772).