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Acts of Union of Great Britain and Ireland

Union with Ireland Act 1800
Citation 39 & 40 Geo. 3 c. 67
Territorial extent Kingdom of Great Britain
Dates
Commencement 1 January 1801
Status: Amended
Revised text of statute as amended
Act of Union (Ireland) 1800
Citation 40 Geo. 3 c.38
Introduced by John Toler
Territorial extent Kingdom of Ireland
Dates
Commencement 1 January 1801
Other legislation
Repealed by Statute Law Revision (Pre-Union Irish Statutes) Act, 1962 (Rep. I.)
Relates to An Act to regulate the Mode by which the Lords Spiritual and Temporal, and the Commons, to serve in the Parliament of the United Kingdom on the Part of Ireland shall be summoned and returned to the said Parliament (40 Geo. 3 c.29)
Status: Repealed
Revised text of statute as amended
Treaty of Windsor 1175
Treaty of York 1237
Treaty of Perth 1266
Treaty of Montgomery 1267
Treaty of Aberconwy 1277
Statute of Rhuddlan 1284
Treaty of Edinburgh–Northampton 1328
Treaty of Berwick 1357
Poynings' Law 1495
Laws in Wales Acts 1535–42
Crown of Ireland Act 1542
Treaty of Edinburgh 1560
Union of the Crowns 1603
Union of England and Scotland Act 1603
Act of Settlement 1701
Act of Security 1704
Alien Act 1705
Treaty of Union 1706
Acts of Union 1707
Personal Union of 1714 1714
Wales and Berwick Act 1746
Irish Constitution 1782
Acts of Union 1800
Government of Ireland Act 1920
Anglo-Irish Treaty 1921
Royal and Parliamentary Titles Act 1927
N. Ireland (Temporary Provisions) Act 1972
Northern Ireland Assembly 1973
N. Ireland Constitution Act 1973
Northern Ireland Act 1998
Government of Wales Act 1998
Scotland Act 1998
Government of Wales Act 2006
Scotland Act 2012
Edinburgh Agreement 2012
Wales Act 2014
Scotland Act 2016
Wales Act 2017

The Acts of Union 1800 (sometimes erroneously referred to as a single Act of Union 1801) united the Kingdom of Great Britain and the Kingdom of Ireland (previously in personal union) to create the United Kingdom of Great Britain and Ireland with effect from 1 January 1801. Both Acts, though since amended, still remain in force in the United Kingdom, but have been repealed in the Republic of Ireland.

Two acts with the same long title, 'An Act for the Union of Great Britain and Ireland' were passed in 1800; the short title of the act of the Irish Parliament is 'Act of Union (Ireland) 1801', and that of the British Parliament is 'Union with Ireland Act 1801'.

Before these Acts, Ireland had been in personal union with England since 1541, when the Irish Parliament had passed the Crown of Ireland Act 1542, proclaiming King Henry VIII of England to be King of Ireland. Since the 12th century, the King of England had been technical overlord of the Lordship of Ireland, a papal possession. Both the Kingdoms of Ireland and England later came into personal union with that of Scotland upon the Union of the Crowns in 1603.

In 1707, the Kingdom of England and the Kingdom of Scotland were united into a single kingdom: the Kingdom of Great Britain. Upon that union, each House of the Parliament of Ireland passed a congratulatory address to Queen Anne, praying that, "May God put it in your royal heart to add greater strength and lustre to your crown, by a still more comprehensive Union". The Irish parliament at that time was subject to a number of restrictions that placed it subservient to the Parliament of England (and following the union of England and Scotland, the Parliament of Great Britain), however Ireland gained effective legislative independence from Great Britain through the Constitution of 1782.


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