• 17 December – the Dublin and Kingstown Railway, the first public railway in Ireland, opens between Westland Row, Dublin, and Kingstown.
• 18 December – Tithe War: "Rathcormac massacre": At Gortroe, near Rathcormac, County Cork, armed Constabulary reinforced by the regular British Army kill at least nine and wound thirty protesters.^[1][2]
• National Education Act provides for a national system of primary education, including Catholic children, taught in the English language.
• St. Vincent's Hospital is set up at St Stephen's Green, Dublin, by Mary Aikenhead, staffed by the Religious Sisters of Charity.^[3]
• Downshire Bridge ("The Cut") underpass is built in Banbridge, County Down, by contractor William Dargan.

Croquet edit

• Croquet is recorded as being played in Ireland (at Greenmount near Castlebellingham, County Louth) at about this date.^[4]

• March – Timothy Eaton, businessman in Canada, founder of Eaton's department store (died 1907).
• 15 July – John Horgan, politician and member of the Western Australian Legislative Council (died 1907).
• 1 August – William Murphy, evangelical Protestant preacher (died 1872).
• 4 September – Robert Montresor Rogers, recipient of the Victoria Cross for gallantry in 1860 at the Taku Forts, China (died 1895).
• 24 December – Charles W. Jones, lawyer and United States Senator in Florida (died 1897).
• Percy Hetherington Fitzgerald, literary biographer, drama critic and sculptor (died 1925).

• 6 January – Richard Martin, "Humanity Dick", politician and animal rights activist (born 1754).
• 4 June – Samuel Greg, entrepreneur and pioneer of the factory system at Quarry Bank Mill (born 1758).

• 1834 in Scotland
• 1834 in Wales