1821 in Ireland

Events from the year 1821 in Ireland.

Events

12 August - 3 September: the newly crowned King George IV of the United Kingdom lands at Howth to become the first monarch to pay a state visit to Ireland since the 14th century. He stays at the Viceregal Lodge in Dublin; with his mistress Elizabeth Conyngham, Marchioness Conyngham, at Slane Castle; and with Viscount Powerscourt at Powerscourt House. He departs from Dunleary which is renamed Kingstown in his honour.
September-November – potato crop fails.
28 December – Sandycove lifeboat disaster – four lifeboatmen drown attempting to rescue Ellen of Liverpool.
Metal Man seamark erected at Rosses Point.
Loreto Abbey established by Sisters of Loreto at Rathfarnham.

18 January – the Albany New Theatre opens in Dublin. In August, King George IV attends a performance, following which it becomes Dublin's second Theatre Royal.
John Banim's poem The Celt's Paradise is published, and his play Damon and Pythias is first performed on 28 May.
Whitely Stokes publishes a critique of Thomas Malthus's reflections on Ireland: , Dublin, Joshua Porter

20 January – Dennis Mahony, co-founder of the Herald newspaper in Dubuque, Iowa.
February – Robert O'Hara Burke, explorer of Australia.
17 February – Lola Montez, born Eliza Rosanna Gilbert, "Spanish dancer" and royal mistress.
20 February – Miles Gerard Keon, journalist, novelist, colonial secretary and lecturer.
21 February – "Roaring" Hugh Hanna, Evangelical preacher.
8 March – James Sheridan Muspratt, research chemist and teacher.
28 March – William Howard Russell, journalist.
6 May – Robert O'Hara Burke, explorer of Australia.
20 July – Michael Hannan, Archbishop in Roman Catholic Archdiocese of Halifax, Nova Scotia.
22 September – John Conness, United States Senator from California, 1863-1869.
18 December – William Connor Magee, Anglican clergyman, Archbishop of York.
21 December – Samuel Haughton, scientific writer.
27 December – Jane Francesca Elgee, later Lady Wilde, poet.
Date unknown – Joseph Robinson Kirk, sculptor.