1 April - Great Northern Railway (Ireland) formed by a merger of the Irish North Western Railway, Northern Railway of Ireland and the Ulster Railway.
5 January - Lucien Bull, pioneer in chronophotography (died 1972).
James Larkin, trade union leader, socialist and Irish Labour Party TD (died 1947).
James Charles Brady, Canadian politician
25 February - Philip Graves, journalist and writer (died 1953).
11 April - Paul Henry, artist (died 1958).
3 August - Sep Lambert, cricketer (died 1959).
Cissie Cahalan, trade unionist, feminist and suffragette (died 1948).
George Townshend, writer, former clergyman and Bahá'í (died 1957).
Frederick James Walker, motor cycle racer, killed at 1914 Isle of Man TT races (died 1914).
Gladys Wynne, artist (died 1968).
15 February - Daniel Pollen, politician, ninth Premier of New Zealand (born 1813).
19 April - William Wilde, surgeon, author and father of Oscar Wilde (born 1815).
7 May - Joseph Philip Ronayne, civil engineer (born 1822).
16 June - Sir Henry Thomas, police magistrate in London (born 1807).
25 June - Myles Keogh, officer in American Civil War, later in U.S. 7th Cavalry Regiment, killed at the Battle of the Little Bighorn (born 1840).
14 July - James Henry, physician, classical scholar and poet (born 1798).
1876 in Ireland Wikipedia
Events from the year 1876 in Ireland.