Merthyr Tydfil was a parliamentary constituency

United Kingdom constituencies

In the United Kingdom , each of the electoral areas or divisions called constituencies elects one or more members to a parliament or assembly.Within the United Kingdom there are now five bodies with members elected by constituencies:...

 centred on the town of Merthyr Tydfil

Merthyr Tydfil

Merthyr Tydfil is a town in Wales, with a population of about 30,000. Although once the largest town in Wales, it is now ranked as the 15th largest urban area in Wales. It also gives its name to a county borough, which has a population of around 55,000. It is located in the historic county of...

 in Glamorgan

Glamorgan

Glamorgan or Glamorganshire is one of the thirteen historic counties and a former administrative county of Wales. It was originally an early medieval kingdom of varying boundaries known as Glywysing until taken over by the Normans as a lordship. Glamorgan is latterly represented by the three...

. From 1832 to 1868 it returned one Member of Parliament

Member of Parliament

A Member of Parliament is a representative of the voters to a :parliament. In many countries with bicameral parliaments, the term applies specifically to members of the lower house, as upper houses often have a different title, such as senate, and thus also have different titles for its members,...

 to the House of Commons

British House of Commons

The House of Commons is the lower house of the Parliament of the United Kingdom, which also comprises the Sovereign and the House of Lords . Both Commons and Lords meet in the Palace of Westminster. The Commons is a democratically elected body, consisting of 650 members , who are known as Members...

 of the Parliament of the United Kingdom

Parliament of the United Kingdom

The Parliament of the United Kingdom of Great Britain and Northern Ireland is the supreme legislative body in the United Kingdom, British Crown dependencies and British overseas territories, located in London...

, and in 1868 this was increased to two members. The constituency was abolished for the 1918 general election

United Kingdom general election, 1918

The United Kingdom general election of 1918 was the first to be held after the Representation of the People Act 1918, which meant it was the first United Kingdom general election in which nearly all adult men and some women could vote. Polling was held on 14 December 1918, although the count did...

.

It was re-established in 1950 as a single-member constituency, and abolished again for the 1983 general election

United Kingdom general election, 1983

The 1983 United Kingdom general election was held on 9 June 1983. It gave the Conservative Party under Margaret Thatcher the most decisive election victory since that of Labour in 1945...

, when it was largely replaced by the new Merthyr Tydfil & Rhymney

Merthyr Tydfil and Rhymney (UK Parliament constituency)

Merthyr Tydfil and Rhymney is a county constituency represented in the House of Commons of the Parliament of the United Kingdom.- Boundaries :The main towns are Merthyr Tydfil and Rhymney...

 constituency.

1832–1868

The Parliamentary Boundaries Act 1832

Parliamentary Boundaries Act 1832

The Parliamentary Boundaries Act 1832 was an Act of the Parliament of the United Kingdom which defined the parliamentary divisions in England and Wales required by the Reform Act 1832....

 defined the new Parliamentary Borough of Merthyr Tydvil in great detail:

From the Point on the North of Merthyr Tydvil at which the Northern Boundary of the Hamlet of Gellydeg meets the River called the Great Taff, Northward, along the Great Taff, to the Point at which the same is cut by the Southern Fence of Cilsanos Common; thence, Eastward, along the Fence of Cilsanos Common to the Point at which the same cuts the Brecon Road; thence, Southward, along the Brecon Road to the Point at which the same meets the Vainor

Vaynor

Vaynor is a village, parish and community in the Merthyr Tydfil County Borough in Wales, United Kingdom.- Location :...

 Road; thence, Eastward, along the Vainor Road to the Point at which the same meets a Bye Road leading to Cefn-coed-y-Cwymner; thence in a straight Line to the Point at which the Little Taff would be cut by a straight Line to be drawn from the Point last described to the Southern Mouth of a Culvert on the Eastern Side of the Little Taff; thence, up the Little Taff, along the Boundary of the Parish of Merthyr Tydvil to the Point at which the Cwm Bargoed Stream is joined by a little Brook from the Coli Ravine; thence in a straight Line to the North eastern Corner of the Stone Fence of Pen-dwy-cae Vawr Farm; thence along the Road which passes Pen-dwy-cae Vawr Farmhouse to the Point at which the same meets the Mountain Track from Dowlais to Quakers Yard; thence, Southward, along the said Track, between the Farms of Pen-dwy-cae Vach and Pen-dwy-cae Vawr, to the Point at which such Track meets a Road running nearly due West, by a Stone Quarry, to Pen-y-rhw Gymra Cottage; thence along the last-mentioned Road to the Point at which the same reaches the Southern Side of Pen-y-rhw Gymra Cottage; thence in a straight Line to the Point at which the Southern Boundary of Troed-y-rhw Farm meets the Cardiff Road; thence along the Southern Boundary of Troed-y-rhw Farm to the Point at which the same meets the Great Taff; thence in a straight Line to the Bridge over the Cardiff Canal called Pont-y-nant Maen; thence, Northward, along the Cardiff Canal to the Point at which the same is intersected by the Cwmdu Brook; thence along the Cwmdu Brook to its Source; thence in a straight Line drawn due West to the Boundary of the Parish of Aberdare; thence, Southward, along the Boundary of the Parish of Aberdare

Aberdare

Aberdare is an industrial town in Rhondda Cynon Taf, Wales, situated at the confluence of the Rivers Dare and Cynon. The population at the census was 31,705...

 to the Point at which the same meets the Boundary of the Hamlet of Gellydeg; thence, Eastward, along the Boundary of the Hamlet of Gellydeg to the Point first described.

1868–1918

The Representation of the People Act 1867, which increased the number of members returned to two, also widened the constituency boundaries. To the existing parliamentary borough were added the parish of Aberdare

Aberdare

Aberdare is an industrial town in Rhondda Cynon Taf, Wales, situated at the confluence of the Rivers Dare and Cynon. The population at the census was 31,705...

, part of the parishes of Merthyr and "Faenor" (Vaynor

Vaynor

Vaynor is a village, parish and community in the Merthyr Tydfil County Borough in Wales, United Kingdom.- Location :...

), and part of the district of Mountain Ash.

The same boundaries were retained in 1885

Redistribution of Seats Act 1885

The Redistribution of Seats Act 1885 was an Act of the Parliament of the United Kingdom. It was a piece of electoral reform legislation that redistributed the seats in the House of Commons, introducing the concept of equally populated constituencies, in an attempt to equalise representation across...

, and can be seen on the boundary commissioners' map.

1950–1983

Merthyr Tydfil Borough Constituency, created by the Representation of the People Act 1948

Representation of the People Act 1948

The Representation of the People Act 1948 was an Act of the Parliament of the United Kingdom that altered the law relating to parliamentary and local elections...

, had an identical area to the County Borough

County borough

County borough is a term introduced in 1889 in the United Kingdom of Great Britain and Ireland , to refer to a borough or a city independent of county council control. They were abolished by the Local Government Act 1972 in England and Wales, but continue in use for lieutenancy and shrievalty in...

 of Merthyr Tydfil

Merthyr Tydfil

Merthyr Tydfil is a town in Wales, with a population of about 30,000. Although once the largest town in Wales, it is now ranked as the 15th largest urban area in Wales. It also gives its name to a county borough, which has a population of around 55,000. It is located in the historic county of...

. The seat was first contested at the 1950 general election

United Kingdom general election, 1950

The 1950 United Kingdom general election was the first general election ever after a full term of a Labour government. Despite polling over one and a half million votes more than the Conservatives, the election, held on 23 February 1950 resulted in Labour receiving a slim majority of just five...

. The boundaries were unchanged until 1983.

MPs 1832–1868

Election		Member	Party
	1832 United Kingdom general election, 1832 -Seats summary:-Parties and leaders at the general election:The Earl Grey had been Prime Minister since 22 November 1830. His was the first predominantly Whig administration since the Ministry of all the Talents in 1806-1807....	Sir John Josiah Guest John Josiah Guest Sir Josiah John Guest, 1st Baronet, known as John Josiah Guest, was a Welsh engineer and entrepreneur.-Life:Born in Dowlais, Merthyr Tydfil, Wales, as the son of Thomas Guest, a partner in the Dowlais Iron Company...
	1852 United Kingdom general election, 1852 The July 1852 United Kingdom general election was a watershed election in the formation of the modern political parties of Britain. Following 1852, the Tory/Conservative party became, more completely, the party of the rural aristocracy, while the Whig/Liberal party became the party of the rising...	Henry Austin Bruce Henry Bruce, 1st Baron Aberdare Henry Austin Bruce, 1st Baron Aberdare GCB, PC, FRS was a British Liberal Party politician, who served in government most notably as Home Secretary and as Lord President of the Council....	Liberal Liberal Party (UK) The Liberal Party was one of the two major political parties of the United Kingdom during the 19th and early 20th centuries. It was a third party of negligible importance throughout the latter half of the 20th Century, before merging with the Social Democratic Party in 1988 to form the present day...
	1868 United Kingdom general election, 1868 The 1868 United Kingdom general election was the first after passage of the Reform Act 1867, which enfranchised many male householders, thus greatly increasing the number of men who could vote in elections in the United Kingdom...	representation increased to two members

MPs 1868–1918

Election	|2nd Member	2nd Party
1868 United Kingdom general election, 1868 The 1868 United Kingdom general election was the first after passage of the Reform Act 1867, which enfranchised many male householders, thus greatly increasing the number of men who could vote in elections in the United Kingdom...		Henry Richard Henry Richard Rev. Henry Richard MP , "the Apostle of Peace", was a Congregational minister and Welsh Member of Parliament, 1868-88. The son of the Rev...	Liberal Liberal Party (UK) The Liberal Party was one of the two major political parties of the United Kingdom during the 19th and early 20th centuries. It was a third party of negligible importance throughout the latter half of the 20th Century, before merging with the Social Democratic Party in 1988 to form the present day...		Richard Fothergill Richard Fothergill Richard Fothergill was an English ironmaster and coal-owner in Wales and a Liberal politician who sat in the House of Commons from 1868 to 1880....	Liberal Liberal Party (UK) The Liberal Party was one of the two major political parties of the United Kingdom during the 19th and early 20th centuries. It was a third party of negligible importance throughout the latter half of the 20th Century, before merging with the Social Democratic Party in 1988 to form the present day...
1880 United Kingdom general election, 1880 -Seats summary:-References:*F. W. S. Craig, British Electoral Facts: 1832-1987* British Electoral Facts 1832-1999, compiled and edited by Colin Rallings and Michael Thrasher *...					Charles Herbert James Charles Herbert James Charles Herbert James was a British politician. He was elected as a Liberal Member of Parliament for Merthyr Tydfil in 1880, resigning in 1888 by becoming Steward of the Manor of Northstead.-References:...	Liberal Liberal Party (UK) The Liberal Party was one of the two major political parties of the United Kingdom during the 19th and early 20th centuries. It was a third party of negligible importance throughout the latter half of the 20th Century, before merging with the Social Democratic Party in 1988 to form the present day...
1888 by-election (Mar)					David Alfred Thomas	Liberal Liberal Party (UK) The Liberal Party was one of the two major political parties of the United Kingdom during the 19th and early 20th centuries. It was a third party of negligible importance throughout the latter half of the 20th Century, before merging with the Social Democratic Party in 1988 to form the present day...
1888 by-election (Oct)		William Pritchard Morgan William Pritchard Morgan William Pritchard Morgan was a Welsh solicitor, mine owner, and company promoter. He acquired the gold mine at Gwynfynydd in 1887, earning the name "Welsh gold king". He was also actively publicised as an investor in Sichuan, China....	Liberal Liberal Party (UK) The Liberal Party was one of the two major political parties of the United Kingdom during the 19th and early 20th centuries. It was a third party of negligible importance throughout the latter half of the 20th Century, before merging with the Social Democratic Party in 1988 to form the present day...
1900 United Kingdom general election, 1900 -Seats summary:-See also:*MPs elected in the United Kingdom general election, 1900*The Parliamentary Franchise in the United Kingdom 1885-1918-External links:***-References:*F. W. S. Craig, British Electoral Facts: 1832-1987**...		James Keir Hardie	Labour Labour Party (UK) The Labour Party is a centre-left democratic socialist party in the United Kingdom. It surpassed the Liberal Party in general elections during the early 1920s, forming minority governments under Ramsay MacDonald in 1924 and 1929-1931. The party was in a wartime coalition from 1940 to 1945, after...
1910 (Jan)					Sir Edgar Rees Jones Edgar Rees Jones Sir Edgar Rees Jones was a Welsh barrister and Liberal Party politician. He was the Member of Parliament for Merthyr Tydfil from 1910 to 1918, and then for Merthyr from 1918 to 1922...	Liberal Liberal Party (UK) The Liberal Party was one of the two major political parties of the United Kingdom during the 19th and early 20th centuries. It was a third party of negligible importance throughout the latter half of the 20th Century, before merging with the Social Democratic Party in 1988 to form the present day...
1915 by-election		Charles Butt Stanton	Independent Labour
1918 United Kingdom general election, 1918 The United Kingdom general election of 1918 was the first to be held after the Representation of the People Act 1918, which meant it was the first United Kingdom general election in which nearly all adult men and some women could vote. Polling was held on 14 December 1918, although the count did...	constituency abolished: see Merthyr Merthyr (UK Parliament constituency) Merthyr was a borough constituency centred on the town of Merthyr Tydfil in Wales. It returned one Member of Parliament to the House of Commons of the Parliament of the United Kingdom....  and Aberdare Aberdare (UK Parliament constituency) Aberdare was a constituency in the Parliament of the United Kingdom. It was created for the 1918 general election and returned one Member of Parliament by the first past the post system until it was abolished for the 1983 general election....

MPs 1950–1983

Election		Member	Party
1950 United Kingdom general election, 1950 The 1950 United Kingdom general election was the first general election ever after a full term of a Labour government. Despite polling over one and a half million votes more than the Conservatives, the election, held on 23 February 1950 resulted in Labour receiving a slim majority of just five...		constituency re-established
	1950 United Kingdom general election, 1950 The 1950 United Kingdom general election was the first general election ever after a full term of a Labour government. Despite polling over one and a half million votes more than the Conservatives, the election, held on 23 February 1950 resulted in Labour receiving a slim majority of just five...	S. O. Davies	Labour Labour Party (UK) The Labour Party is a centre-left democratic socialist party in the United Kingdom. It surpassed the Liberal Party in general elections during the early 1920s, forming minority governments under Ramsay MacDonald in 1924 and 1929-1931. The party was in a wartime coalition from 1940 to 1945, after...
	1970		Independent Labour Independent (politician) In politics, an independent or non-party politician is an individual not affiliated to any political party. Independents may hold a centrist viewpoint between those of major political parties, a viewpoint more extreme than any major party, or they may have a viewpoint based on issues that they do...
	1972 by-election Merthyr Tydfil by-election, 1972 The Merthyr Tydfil by-election of 13 April 1972 was held after the death of S. O. Davies on 25 February the same year. The Labour Party won the by-election in what had traditionally been a safe seat, although Davies had been elected in the 1970 general election as an Independent after he had been...	Ted Rowlands Ted Rowlands, Baron Rowlands Edward "Ted" Rowlands, Baron Rowlands, CBE is a Welsh politician, who served as a Labour Party Member of Parliament for over thirty years and as a junior minister in the 1960s and 1970s.-Education:...	Labour Labour Party (UK) The Labour Party is a centre-left democratic socialist party in the United Kingdom. It surpassed the Liberal Party in general elections during the early 1920s, forming minority governments under Ramsay MacDonald in 1924 and 1929-1931. The party was in a wartime coalition from 1940 to 1945, after...
	1983 United Kingdom general election, 1983 The 1983 United Kingdom general election was held on 9 June 1983. It gave the Conservative Party under Margaret Thatcher the most decisive election victory since that of Labour in 1945...	constituency abolished: see Merthyr Tydfil & Rhymney Merthyr Tydfil and Rhymney (UK Parliament constituency) Merthyr Tydfil and Rhymney is a county constituency represented in the House of Commons of the Parliament of the United Kingdom.- Boundaries :The main towns are Merthyr Tydfil and Rhymney...