history

Timeline: key dates from 1916 to the Agreement (sourced chronology)

MIIA Explainer · 12 Sep 2026

This chronology is a reading aid for the history pillar—not a substitute for narrative articles such as Home Rule to partition, the Troubles in brief, or the Good Friday Agreement. Dates below are widely attested in parliamentary, treaty, and archival sources.

Revolution and settlement (1916–1925)

• 24–29 April 1916 — Easter Rising in Dublin; Proclamation of the Irish Republic; rising suppressed; leaders executed in May.
• December 1918 — UK general election; Sinn Féin wins large majority of Irish seats outside north-east Ulster.
• 21 January 1919 — First Dáil Éireann meets; Declaration of Independence. War of Independence intensifies through 1919–21.
• 23 December 1920 — Government of Ireland Act 1920 receives royal assent: separate parliaments for Northern and Southern Ireland.
• 22 June 1921 — Northern Ireland Parliament opened; James Craig becomes Prime Minister.
• 11 July 1921 — Truce between British forces and the IRA.
• 6 December 1921 — Articles of Agreement for a Treaty signed in London.
• 7 January 1922 — Dáil approves Treaty (64–57).
• 28 June 1922 — Conventional start of Irish Civil War (Four Courts); anti-Treaty forces dump arms May 1923.
• 6 December 1922 — Irish Free State comes into being.
• 7 December 1922 — Northern Ireland Parliament opts out of the Free State.
• 1924–25 — Boundary Commission sits; proposed changes abandoned; tripartite agreement retains existing border (December 1925).

South: dominion to republic (1937–1949)

• 1937 — Bunreacht na hÉireann approved; state named Éire/Ireland; President replaces Governor-General in domestic design.
• 1939–45 — Emergency (Irish neutrality in the Second World War).
• 18 April 1949 — Republic of Ireland Act 1948 comes into force; UK Ireland Act 1949 recognises the change and affirms NI’s UK status subject to Stormont consent (as then framed).

Rights, conflict, and direct rule (1967–1985)

• 1967–69 — Northern Ireland Civil Rights Association campaigns; clashes and August 1969 rioting; British troops deployed.
• 1970 — Provisional IRA emerges from split; loyalist groups active.
• 30 January 1972 — Bloody Sunday in Derry/Londonderry.
• March 1972 — Stormont suspended; direct rule begins.
• December 1973 — Sunningdale Agreement; Executive falls May 1974 after UWC strike.
• 1980–81 — Republican hunger strikes; ten men die in 1981.
• 15 November 1985 — Anglo-Irish Agreement signed at Hillsborough.

Ceasefires to Agreement (1993–1998)

• 15 December 1993 — Downing Street Declaration (Major–Reynolds).
• 31 August 1994 — Provisional IRA ceasefire (later breaks and restores); loyalist ceasefires follow in October 1994.
• 10 April 1998 — Belfast/Good Friday Agreement concluded.
• 22 May 1998 — Referendums in Northern Ireland and in Ireland approve the Agreement and related constitutional change.
• December 1999 — Devolution formally begins under the new institutions (thereafter interrupted and restored multiple times).

How to use this timeline

Each hinge connects to a deeper explainer: Treaty and civil war; Free State to Republic; Sunningdale to 1998; border-poll rules. For EU accession (1973) and Brexit-era border management, see Ireland and the EU.

CAIN’s detailed chronologies remain the best open academic starting point for day-level conflict events; parliamentary libraries cover constitutional instruments.

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Selected additional markers (sourced)

• 21 November 1920 — Bloody Sunday in Dublin (War of Independence phase): British forces kill civilians at Croke Park; IRA targeted killings of intelligence officers the same morning. Often confused with 1972’s Bloody Sunday; both names recur in memory politics.
• 1932–38 — Economic War between the Free State/Éire and the UK; resolved toward the end of the decade as wider European war loomed.
• 5 October 1968 — Televised police baton-charge on a civil-rights march in Derry marks a major escalation point in many chronologies.
• 15 August 1998 — Omagh bomb by a Real IRA splinter group kills 29 people and unborn twins—the deadliest single incident of the Troubles—months after the Agreement, underscoring spoiler violence even after the deal.

These additions illustrate continuity of contested anniversaries rather than a claim to completeness. For narrative context see Home Rule to partition, Free State to Republic, and Sunningdale to the Agreement.

Method note

Where exact days vary across secondary accounts for secondary events, prefer legislation commencement dates, treaty signature dates, and referendum dates—the hardest primary markers. Conflict death tallies belong to CAIN/Sutton methodology rather than to this short list.

Sources

1. CAIN chronology — https://cain.ulster.ac.uk/

2. House of Commons Library, Anglo-Irish Treaty briefing.

3. Treaty (1921); Republic of Ireland Act 1948; Ireland Act 1949; Belfast Agreement 1998.

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