Robert Wedderburn was a Jamaican-born preacher and radical abolitionist who was jailed for his outspoken attacks on slavery and religious authority. Born around 1762 to an enslaved Black woman and a Scottish plantation owner, he grew up close to the realities of slavery that he would later fight against.
A Childhood Shaped by Slavery
Rosanna was enslaved in Jamaica and worked in the household of James Wedderburn. She had already had two children when she became pregnant with Robert. While she was five months pregnant, James sold her to her previous enslaver. He arranged for the child she was carrying to be born free, and Robert was later registered as a free person. His freedom, however, did not protect his family from the cruelty of slavery.
Robert later wrote about the treatment of his mother, including the violence she suffered. Rosanna was eventually separated from her son, and Robert was raised largely by his maternal grandmother, a woman known as Talkee Amy. These experiences gave him a personal understanding of what slavery meant beyond the plantation system described in political debates. He had seen how slavery could separate families, expose people to violence and place almost every part of their lives under the control of others.
At about 16, Wedderburn left Jamaica and joined the Royal Navy, hoping to build a life away from the difficult conditions he had known there. His years at sea exposed him to another harsh system of authority. Sailors lived under strict discipline, poor conditions and the threat of physical punishment, experiences that further shaped Wedderburn’s growing opposition to cruelty and unchecked power.
He eventually left the navy and settled in London as a young man. There he trained as a tailor and worked as a journeyman, although finding steady work was often difficult. His struggles with poverty would later become closely connected to his radical political beliefs.
From Preacher to Radical
London introduced Wedderburn to a growing world of political and religious radicalism. He encountered the ideas of Thomas Spence, who called for major changes to land ownership and the distribution of wealth. Wedderburn became involved in radical circles and developed a reputation as a powerful and outspoken speaker.
Religion initially played an important role in his life. After hearing a Wesleyan preacher in London in 1786, he became a Methodist and began studying and writing about Christianity. His views changed over time, however, and he eventually moved away from Christianity and embraced deism and freethought.
Wedderburn’s outspoken views eventually brought him into direct conflict with the authorities. In 1820, he was prosecuted for blasphemous libel after publicly questioning the teachings and authority of Christianity. He argued that religion had been used to keep poor people in “ignorance and superstition” and challenged the authority of priests and established churches. These views were treated as criminal blasphemy under the laws of the time. He was convicted and sentenced to two years in Dorchester Jail.
The Horrors of Slavery
Prison did not end Wedderburn’s activism. In 1824, he published his best-known work, The Horrors of Slavery. The book was deeply personal because Wedderburn was not writing about slavery as a distant observer. His own mother had been enslaved, his father had owned enslaved Africans, and his childhood had been shaped by the institution.
In the book, Wedderburn described the suffering of enslaved Africans and the destruction slavery could bring to families. He used his own family history to expose the human cost of a system that treated people as property. The work also reflected his wider belief that the powerful should not be allowed to control the lives of others without challenge.
His attack on slavery was therefore part of a much broader radical outlook. Wedderburn supported political and economic change, freedom of speech and greater equality. He believed that ordinary people should have the right to question institutions that demanded obedience from them.
His Final Years
Wedderburn continued to attract the attention of the authorities. In 1831, when he was about 69, he was arrested again and sentenced to two years in Giltspur Street Prison after being convicted of keeping a brothel.
After his release, he appears to have spent some time in New York before returning to London. His final years remain poorly documented. The last known record of him dates from 1834, when a Home Office informer reported his presence at a gathering in London.
The exact date of Wedderburn’s death is unknown. He is generally believed to have died around 1835 or 1836, but the surviving records do not establish the date with certainty.
Sources:
https://livesretold.co.uk/robert-wedderburn
https://www.cambridge.org/core/books/abs/robert-wedderburn-abolition-and-the-commons/introduction/086788ED75D7D2A199CF239BBFD421FC
