The Merthyr Rising of 1831: Dic Penderyn and the Red Flag
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The Merthyr Rising of 1831 grew from wage cuts, debt, unemployment and anger at a system that allowed goods to be seized from struggling families. Over several days, workers and townspeople in Merthyr Tudful confronted employers, magistrates and soldiers. A red flag appeared above the crowd and became one of the event's most enduring symbols.
The rising ended with deaths, arrests and punishment. One young miner, Richard Lewis, remembered as Dic Penderyn, was convicted of wounding a soldier and hanged. Doubts about the case helped turn him into a symbol of injustice, but responsible history must separate what the court recorded, what later witnesses claimed and what cannot now be proved.
What caused the Merthyr Rising of 1831?
By the early nineteenth century, Merthyr Tydfil had been transformed by iron. Large works drew workers and families into a rapidly expanding town. The new economy created extraordinary wealth, but it also exposed labourers to unstable wages, dangerous work, crowded housing and the power of employers and creditors.
In 1831, an economic downturn intensified the pressure. Wage reductions and unemployment met a system in which bailiffs could seize household possessions to satisfy debt. The removal of goods was not an abstract financial process. It entered a family's home and made hardship visible to neighbours.
Political frustration mattered too. Parliamentary reform was being debated across Britain, and many working people had little formal voice. Local grievances therefore connected with a wider argument about representation, justice and power.
What happened during the rising?
At the beginning of June, crowds gathered and attempted to recover goods taken by bailiffs. Protest widened. Records were destroyed, employers and officials were confronted, and control of parts of the town shifted away from the authorities.
Soldiers arrived as magistrates tried to restore order. On 3 June, confrontation at the Castle Inn turned violent. Shots were fired and people on both sides were killed or wounded. The precise sequence is difficult to reconstruct from hostile and incomplete accounts, but the bloodshed changed the scale of the crisis.
Workers maintained resistance for a time, including action around roads and supplies. Reinforcements eventually allowed the authorities to regain control. Arrests followed, and the legal response narrowed a broad social revolt into cases against individual defendants.

What did the red flag mean?
Accounts of the rising describe a red flag carried by the crowd. It is often said to have been coloured with calf's blood and raised as a sign of workers' solidarity. The image is powerful, but phrases such as “the first red flag” need care because the history of political symbols rarely has one uncontested starting point.
What can be said with confidence is that the flag became central to the memory of Merthyr. Red later carried international associations with labour and socialist movements, allowing the 1831 image to speak to struggles that followed.
In Welsh, Y Faner Goch means “The Red Flag”. The phrase now also evokes the labour anthem known in Welsh translation, but the song belongs to a later period. Keeping those dates separate makes both histories clearer.
Why is Dic Penderyn's conviction disputed?
Dic Penderyn was the name by which Richard Lewis became known. He was convicted of stabbing Private Donald Black in the leg during the rising. Lewis denied the charge. He was sentenced to death and executed in Cardiff on 13 August 1831.
Campaigns for mercy failed despite concern about the evidence. Later stories included claims that another man confessed, but those accounts came after the trial and are not simple proof that modern readers can test. The fair conclusion is that serious doubt has long surrounded the conviction, not that every later detail is certain.
His death gave the rising a human face. A complex movement involving thousands could be remembered through one young man's name, trial and final journey. That emotional focus helped sustain public memory, though it can also obscure the other dead, wounded, transported and imprisoned people.
How did the rising change Welsh history?
The authorities suppressed the immediate revolt, but they could not erase the conditions that produced it. Merthyr became part of a longer Welsh history of industrial conflict, popular protest and demands for representation.
The rising did not create a single continuous movement leading neatly to later trade unionism. Historical change is less tidy. It supplied language, martyrs and symbols that later campaigners could reuse, while the iron town itself continued to change.
Remembering 1831 also challenges a version of industrial history made only from furnaces, output and owners. Debt collectors, family possessions, wages, food and fear belong in the account because they explain why economic structures became personal enough to provoke revolt.

How should we read the evidence today?
Begin with the date and purpose of each source. Court records show what the prosecution and witnesses said under a particular legal system. Later memorials show how communities chose to remember. Victorian illustrations may capture drama while reflecting the artist's own period and assumptions.
Ask what is missing. Working-class voices were less likely to survive in formal archives, and Welsh speech may reach us through English-language reporting. Silence does not prove an event did not happen, but it does limit how firmly we can describe it.
The most respectful approach allows uncertainty without draining the story of meaning. Merthyr's workers faced real hardship, real violence followed, and Dic Penderyn was really executed. Those facts are powerful enough without filling every gap with legend.
Continue the history of protest with the Rebecca Riots, or move into industrial labour conflict through the Penrhyn Lockout.
Sources, further reading and image credits
Sources and further reading
- Coflein record for the Merthyr Rising
- Royal Welsh Museum Merthyr Rising project
- Dictionary of Welsh Biography entry for Richard Lewis