1915 in Ireland

Events

March – Construction in Queenstown of St Colman's Cathedral, Cobh, concluded with completion of the spire.
4 April – Twenty-five thousand National Volunteers assembled at the Phoenix Park, Dublin. John Redmond took the salute from under the statue of Charles Stewart Parnell on Sackville Street.
5 April – At the National Volunteers convention at the Mansion House, Dublin, John Redmond praised their response to World War I.
7 May – Sinking of the Lusitania: British ocean liner was sunk by Imperial German Navy U-boat U-20 about off Old Head of Kinsale, County Cork, killing 1,198 civilians en route from New York to Liverpool, among them the Irish-born art dealer and benefactor Sir Hugh Lane and Irish composer and conductor Thomas O'Brien Butler.
25 May – The prime minister of the United Kingdom formed the Asquith coalition ministry, a national wartime coalition government of twelve Liberals, eight Unionists and one Labour member. In Dublin, the Irish Parliamentary Party approved John Redmond's decision not to join.
29 July – Republicans, led by Patrick Pearse, took over the Gaelic League at its Dundalk conference. Douglas Hyde resigned as its president.
1 August – O'Donovan Rossa was buried at Glasnevin Cemetery in Dublin, and Patrick Pearse delivered the graveside oration.
26 December – The Irish Republican Brotherhood Military Council decided to stage an Easter Rising in 1916.
The Elim Pentecostal Church was founded in Monaghan by Welsh evangelist George Jeffreys.

1 February – Helen Waddell's first play, The Spoiled Buddha, was premiered at the Opera House, Belfast, by the Ulster Literary Society.
Francis Ledwidge's poems Songs of the Fields were published.
James Stephens' poems The Adventures of Seumas Beg: the Rocky Road to Dublin and Songs from the Clay were published.
The first dramatic film made in Ireland, Fun at Finglas Fair, was directed by F. J. McCormick. It was never released as all prints were destroyed in the Easter Rising of April 1916.

11 January – Paddy Mayne, international rugby union footballer and decorated soldier.
13 January – Kit Ahern, Fianna Fáil party Teachta Dála .
21 January – Andy O'Brien, Fine Gael party senator from County Cavan.
25 January – Liam Cunningham, Fianna Fáil TD.
7 February – Mark Clinton, Fine Gael TD, Minister for Agriculture and Member of the European Parliament.
15 February – Sam Kydd, actor.
15 March – Micho Russell, tin whistle player and collector of traditional music and folklore.
9 April – Leonard Wibberley, author.
2 May – George Harrison, member of the Provisional Irish Republican Army and alleged gun-runner.
3 May – Walter Macken, novelist, dramatist and actor.
17 May – Oisín Kelly, sculptor.
18 June – Joan Trimble, composer, pianist and newspaper proprietor.
6 August – Tom O'Reilly, Cavan Gaelic footballer and independent TD for Cavan 1944-1948
28 August – Patrick Hennessy, painter.
16 September – Eddie Filgate, Fianna Fáil TD.
16 October – Jim Young, Cork hurler.
18 September – James Tully, Labour Party TD and cabinet minister.
7 November – Bill Hayes, football player.
20 December – Noel Browne, politician, cabinet minister.

Full date unknown:

20 January – Arthur Guinness, 1st Baron Ardilaun, businessman, politician, and philanthropist.
26 January – Michael Sullivan, physician, professor and politician in Canada.
28 January – David Dickson Rogers, politician in Ontario.
14 February – Cornelius Coughlan, soldier, recipient of the Victoria Cross for gallantry in 1857 at Delhi, India.
24 April – Frederick William Hall, soldier, posthumous recipient of the Victoria Cross for gallantry in 1915 during the Second Battle of Ypres in Belgium.
7 May – On board the :
* O'Brien Butler, composer.
* Hugh Lane, established Municipal Gallery of Modern Art in Dublin.
29 June – Jeremiah O'Donovan Rossa, Fenian leader.
2 August – William Abraham, Irish Nationalist Member of Parliament.
21 August – Gerald Robert O'Sullivan, recipient of the Victoria Cross for gallantry in 1915 at Gallipoli, Turkey.
21 August – Thomas Pakenham, 5th Earl of Longford, peer and soldier.
25 September – Joseph Lynch, cricketer.
10 October – Albert Cashier, soldier in the Union Army during the American Civil War, physically female, but lived as a man.
21 December – Violet Florence Martin, author.