The Glamorganshire Canal – and the Rise of Rail

By Laura Bray

We all know the story – a wager between Samuel Homfray  of the Penydarren Ironworks, and Richard Crawshay of Cyfarthfa that Trevithick’s steam locomotive could haul ten tens of iron from Penydarren to Abercynon, and we all know that Homfray won his bet, and Merthyr became known across the world as the home of the first railway.

But have you ever wondered why the bet was made? Perhaps it just a whim between two very rich two men with money to burn. After all the bet was sizeable 500 guineas or something like £40,000 in today’s money.  Perhaps it was because Homfray, who had used Trevithick’s engines to drive a hammer in the ironworks, was a pioneer.  Or was it because of the Glamorganshire Canal…..?

The Glamorganshire Canal in Merthyr. Photo Courtesy of the Alan George Archive

By the late 18th century, Merthyr was probably the most important manufacturing town in Britain, with a population 8 times larger than that of Cardiff, which was the nearest port.  However, the river wharfs in Cardiff were rapidly reaching capacity and could not keep up with the maritime demands made by Merthyr’s four ironworks.  In addition, it was prohibitively expensive to get the goods from Merthyr to Cardiff, costing the ironmasters something like £14,000 p.a. – a sum equivalent to around £1m today.

Richard Crawshay. Courtesy of Cyfarthfa Castle Museum & Art Gallery

It was within this context that Richard Crawshay took the lead in lobbying for a Parliamentary Bill in order to get the powers to build a canal from Merthyr to Cardiff, and in 1790 the Glamorganshire Canal Act was passed. The Act provided that a company be formed of The Company of Proprietors of the Glamorganshire Canal Navigation with power to purchase land for making the canal and to carry out the necessary works.  The Act also laid down the route that was to be followed, authorised the raising of £90,000 to meet the cost of completing the canal, and laid down the maximum charges for carrying various classes of goods, up to 5d. per ton per mile for carrying stone, iron, timber, etc. and up to 2d. per ton per mile for carrying iron stone, iron ore, coal, lime-stone, etc. It also stated that the distribution of Company profits was not to exceed £8% per annum upon the capital sum actually laid out in making the canal.

The Canal Company appointed a Committee from amongst its shareholders to be responsible for the management of the Company’s affairs, and the first Committee meeting was held on 19 July 1790 at the Cardiff Arms Inn, when it was decided to enter into a contract with Thomas Dadford senior, Thomas Dadford junior and Thomas Sheasby to construct the canal at a cost of £48,228, exclusive of the cost of land. This is about 3 times the annual cost of sending goods to Cardiff, so it was estimated that all costs would be recouped in as little as three years.

Construction work started in August 1790 and it was a massive undertaking – over its length of 25 miles, the land drops by 543 feet, so it was necessary to build 51 locks, some double, and one in Nantgarw, a triple lock; some locks were 10 feet high and the one in Aberfan topped 14’6″. In addition. there was the necessity for an aqueduct to be built at Abercynon, a tunnel under Queen St in Cardiff, several feeders to be created and, as the canal came closer to Merthyr, it had to be cut through sheer mountain rock.  By 1794, however, there was a functioning and effective new transport link between Merthyr and Cardiff at a final cost of £103,600.

Aberfan Lock. Photo courtesy of the Alan George Archive

But even before the canal was completed it had become clear that it needed to be extended beyond Cardiff so as to give access directly to the sea.  Another £20,000 was raised by subscription and a deal was struck with the Marquis of Bute, who owned the land, to build a sea lock and canal basin, which enabled ships of 200 tons to dock. The Sea Lock itself was 103 feet long with gates 27 feet wide.

The canal made transport to Cardiff very cheap, but generated very high revenues.  It was designed to take canal boats of up to 25 tons, each drawn by a horse, with a man and a boy.  By 1836 there were about 200 boats on the canal, each doing 3 round trips every fortnight.  That’s a lot of tonnage at an average of 3d a ton.

But all was not well in the Committee.  From the start, it was dominated by Richard Crawshay, who tended to regard the canal as his and his attempts to squeeze the profits of the other ironmasters was bitterly resented. As early as 1794 Richard Hill Of the Plymouth Works complained that the Canal Company was using water from the river that was legally his.  Guest, in Dowlais, was also vocal about how we could access the canal from his works.  A branch canal seemed impractical so a tramroad was proposed  to which the canal company contributed £1000.  This was competed in 1791 – before the canal.  The Crawshays built a second tramroad between the Gurnos Quarry and their works in Cyfarthfa and a third was built in 1799 by the Hills, linking the Morlais Quarry with the Dowlais to Merthyr Tramroad at Penydarren.

But by 1798, tensions in the committee were so great that they blew.  As a consequence, the other ironmasters were dropped for the canal committee, leaving only Crawshay, and it was another 26 years before they rejoined.  But discussions took place between them about how to break the Crawshay stranglehold of the canal, and the answer seemed to be the construction of a tramroad from Merthyr, to meet the canal at Abercynon.  This tramroad, which opened in 1802 and was built without an Act of Parliament, linking the two existing tramroads from Dowlais to Merthyr and from Morlais to Penydarren.  From the point of view of Guest, Homfray and Hill, although the trams using it were horse drawn,  this new tramroad avoided the delays caused by the locks between Merthyr and Abercynon.

This is the background to the bet that was made between Homfray and Crawshay.  Could the new stream locomotive pull a load of iron?  Could it supersede canal power?

We all know that it did, but broke the rails on the way down, so could not come back.  But progress had been made.  The Taff Vale Railway Company opened as far as Abercynon only 40 years later, and to Merthyr a year later and the canal’s decline was inexorable and it had all but ceased by 1900.

Looking back, it is reasonable to ask, if there had been no canal, where would the home of the steam locomotive be?  Not Merthyr, that’s for sure.

Scheduled Monuments in Merthyr

I recently received an enquiry asking whether there were any Scheduled Monuments in Merthyr Tydfil. The following is transcribed from Wikipedia:-

Merthyr Tydfil County Borough has 43 scheduled monuments. The prehistoric scheduled sites include many burial cairns and several defensive enclosures. The Roman period is represented by a Roman Road. The medieval periods include two inscribed stones, several house platforms and two castle sites. Finally the modern period has 14 sites, mainly related to Merthyr’s industries, including coal mining, transportation and iron works. Almost all of Merthyr Tydfil was in the historic county of Glamorgan, with several of the northernmost sites having been in Brecknockshire.

Scheduled monuments have statutory protection. The compilation of the list is undertaken by Cadw Welsh Historic Monuments, which is an executive agency of the National Assembly of Wales. The list of scheduled monuments below is supplied by Cadw with additional material from RCAHMW (Royal Commission on the Ancient and Historical Monuments of Wales) and Glamorgan-Gwent Archaeological Trust.

Name Site type Community Details Historic County
Gelligaer Standing Stone Standing stone Bedlinog A 2 m (6.6 ft) high stone on open moorland. Probably Bronze Age and with the possible remains of a Bronze Age burial alongside. An inscription on the stone, now mostly illegible, is described as either post-Roman/Early Christian or Early Medieval. Glamorganshire
Coed Cae Round Cairns Round cairn Bedlinog Located in a cairnfield with at least 19 stony mounds, the scheduling consists of a group of eight Bronze Age burial cairns. Glamorganshire
Gelligaer Common Round Cairns Round cairn Bedlinog A group of eleven Bronze Age burial cairns. Glamorganshire
Carn Castell y Meibion ring cairn Ring cairn Cyfarthfa

Troed-y-rhiw

A ring cairn, possibly dating to the Bronze Age, with a 8 m (26 ft) diameter and surrounded by a 3 m (9.8 ft) wide stony ring bank. Glamorganshire
Brynbychan Round Cairn Round cairn Merthyr Vale, A Bronze Age circular cairn with a diameter of 18 m (59 ft). There is an OS triangulation pillar on the site. Glamorganshire
Cefn Merthyr Round Cairns Cairnfield Merthyr Vale Glamorganshire
Morlais Hill ring cairn Ring cairn Pant Glamorganshire
Tir Lan round barrow cemetery Round barrow Treharris The remains of six Bronze Age round barrows, three to the north-west and three to the south-east of Tir Lan farm. All six remain substantially intact despite being reduced by ploughing in the past. Glamorganshire
Garn Las Earthwork Round cairn Troed-y-rhiw The remains a circular burial cairn measuring 14 m (46 ft) in diameter, probably dating to the Bronze Age. Glamorganshire
Merthyr Common Round Cairns Round cairn Troed-y-rhiw A group of six Bronze Age burial cairns ranging from 5 to 19 m (16 to 62 ft) in diameter. Glamorganshire
Carn Ddu platform cairn Platform Cairn Vaynor Glamorganshire
Cefn Cil-Sanws ring cairn Ring cairn Vaynor Glamorganshire
Cefn Cil-Sanws, Cairn on SW side of Round Cairn Vaynor Brecknockshire
Coetgae’r Gwartheg barrow cemetery Round cairn Vaynor Glamorganshire
Garn Pontsticill ring cairn Ring cairn Vaynor Glamorganshire
Dyke 315m E of Tyla-Glas Ditch Bedlinog The remains of a later prehistoric/medieval dyke with a clearly defined bank and ditch running east-west across a ridge top. The 3 m (9.8 ft) wide ditch is 1.5 m (4.9 ft) deep at its east end. Glamorganshire
Cefn Cil-Sanws Defended Enclosure Enclosure – Defensive Vaynor Brecknockshire
Enclosure East of Nant Cwm Moel Enclosure – Defensive Vaynor Glamorganshire
Enclosure on Coedcae’r Ychain Enclosure – Defensive Vaynor Glamorganshire
Gelligaer Common Roman Road Road Bedlinog Glamorganshire
Nant Crew Inscribed Stone (now in St John’s Church, Cefn Coed ) Standing stone Vaynor A 1.5 m (5 ft) high square-sectioned pillar stone thought to date to the Bronze Age. A Latin inscription on the west face and cross incised on the north face are from the 6th and 7th-9th centuries. Holes in the stone indicate that it had been used as a gatepost. Brecknockshire
Platform Houses and Cairn Cemetery on Dinas Noddfa House platforms (& Cairnfield) Bedlinog Medieval house platforms, also prehistoric cairnfield Glamorganshire
Platform Houses on Coly Uchaf Platform house Bedlinog Glamorganshire
Morlais Castle Castle Pant The collapsed remains of a castle begun in 1288 by Gilbert de Clare, Lord of Glamorgan. The walls enclosed an area of approximately 130 by 60 m (430 by 200 ft). It was captured during the 1294-95 rebellion of Madog ap Llywelyn and may have been abandoned shortly afterwards. Glamorganshire
Cae Burdydd Castle Motte Vaynor A 3 m (9.8 ft) high motte and ditch dating to the medieval period. The diameter of 23 m (75 ft) narrows to 9 m (30 ft) at the top. Brecknockshire
Cefn Car settlement Building (Unclassified) Vaynor Glamorganshire
Gurnos Quarry Tramroad & Leat Industrial monument Gurnos Glamorganshire
Sarn Howell Pond and Watercourses Pond Town Glamorganshire
Abercanaid egg-ended boiler Egg-ended Boiler, re-purposed as garden shed Troed-y-rhiw Glamorganshire
Cyfarthfa Canal Level Canal Level Cyfarthfa Glamorganshire
Cyfarthfa Tramroad Section at Heolgerrig Tramroad Cyfarthfa Glamorganshire
Iron Ore Scours and Patch Workings at Winch Fawr, Merthyr Tydfil Iron mine Cyfarthfa Glamorganshire
Ynys Fach Iron Furnaces Industrial monument Cyfarthfa Glamorganshire
Penydarren Tram Road Trackway Merthyr Vale Glamorganshire
Iron Canal Bridge from Rhydycar Bridge Park Glamorganshire
Pont-y-Cafnau tramroad bridge Bridge Park An ironwork bridge spanning the River Taff constructed in 1793. The name, meaning “bridge of troughs”, comes from its unusual three tier design of a tramroad between two watercourses, one beneath the bridge deck and the other on an upper wooden structure which is no longer present. Pont-y-Cafnau is also Grade II* listed. Glamorganshire
Merthyr Tramroad: Morlais Castle section Tramroad Pant Glamorganshire
Merthyr Tramroad Tunnel (Trevithick’s Tunnel) Tramroad Troed-y-rhiw Glamorganshire
Cwmdu Air Shaft & Fan Air Shaft Cyfarthfa Glamorganshire
Remains of Blast Furnaces, Cyfarthfa Ironworks Blast Furnace Park Glamorganshire
Tai Mawr Leat for Cyfarthfa Iron Works Leat Park Glamorganshire
Deserted Iron Mining Village, Ffos-y-fran Industrial monument Troed-y-rhiw Glamorganshire

Please follow the link below to see the original:-

https://en.wikipedia.org/wiki/List_of_scheduled_monuments_in_Merthyr_Tydfil_County_Borough