John Cropper (1797-1874) – son of James Cropper James Cropper died just a few months before the first World Anti-Slavery Convention was held in London. His son, John Cropper would attend along with his brother-in-law and Convention organizer Joseph Sturge. In organizing the World's First Anti- Slavery Convention in 1840, Joseph Sturge and the extended 'Dingle Group' had finally succeeded in uniting the major British and American abolitionists. John Cropper would welcome the American author Harriet Beecher Stowe to Dingle Vale on several occasions. Known as
the most generous man in Liverpool, John Cropper was made the subject of Edward Lear's nonsense poem "He Lived at Dingle Bank" and is mentioned in Elizabeth Gaskell's novel
Mary Barton (1849)
. The sandy bay in front of Dingle Bank known as 'Knott's Hole down the Dingle' is also claimed to have inspired ''Kitt's Hole ...down the Dingle'' in Robert Louis Stevenson's
Treasure Island John Cropper had subsidized Thomas Clarkson's abolitionist tour of Great Britain by £100 in 1823 (£13,000 in 2022 values).
Edward Cropper (1799-1877) – son of James Cropper Edward Cropper like his brother John was a committed abolitionist and had also subsidized Thomas Clarkson's abolitionist tour of Great Britain by £100 in 1823. As Quakers, the Croppers tended to marry into families of the same religious beliefs and commitment to abolishing the evils of slavery. Edward's first wife, Isabella Wakefield (1801–30) died at the age of 29 in 1830. Isabella was the sister of John Cropper's wife Anne Wakefield. Edward's second wife, Margaret Macauley (1812–34) was the daughter of the prominent abolitionist . Margaret Macaulay died of scarlet fever in 1834. Edward's third wife Margaret Denman (1815–99) was the daughter of the abolitionist Peer
Lord Denman. Margaret had previously been married to William Macaulay (1806–46) the son of the prominent abolitionist
Zachary Macaulay, William Macaulay had died at the age of just 40. The marriages of Edward Cropper would serve to widen the influence of the extended Cropper family as a 'Dingle Group' of abolitionists.
Eliza Cropper (1800-1835) – daughter of James Cropper. Eliza Cropper was a leading member of the ''Liverpool Ladies' Anti-Slavery Association,'' founded in the city in 1827 and gave supported to her father, James Cropper's abolitionist activities. According to Joshua Civin's
the Revival of Antislavery in the 1820s at the Local, National, and Global Levels (2001) James Cropper could not have exerted such influence without the help of the ladies of the household. Eliza sent pamphlets to William Lloyd Garrison and others in the United States. Eliza Cropper also developed an Anglo-American women's antislavery and feminist network. It was the female abolitionists who disseminated propaganda aimed at dissuading the use of West Indian sugar. Eliza Cropper was pivotal to the boycott of slave-grown produce and made-up parcels of East-Indies sugar and coffee grown by free labour which were then distributed amongst Members of Parliament. In April 1834 Eliza Cropper had married the abolitionist Joseph Sturge, however on 18 Feb 1835 Eliza died in childbirth, the baby was also lost.
Margaret Macauley Cropper (1812–34) – second wife of Edward Cropper Margaret Macauley Cropper (1812–34) was the daughter of the abolitionist Zachary Macauley (1768-1838) and the sister of the prominent historian and politician
1st Baron Macaulay (1800–59) Secretary of War (1839-41) and Paymaster General (1846-48). Margaret was the second wife of Edward Cropper and died at the age of 22 in 1834.
Margaret Denman Cropper (1815–99) – third wife of Edward Cropper Margaret Denman Cropper (1815–99) welcomed the author Harriet Beecher Stowe on her visits to Dingle Bank. Margaret Denman Cropper corresponded at length with the author Charles Dickens over her father, Lord Denman championing Harriet Beecher Stowe's novel ''Uncle Tom's Cabin.
She also corresponded with the freed American slave, orator and politician, Frederick Douglass, sending him presents of the book Dr Livingstone's Travels'' and a scarf for his wife. Douglass thanked Margaret Cropper for money donated by the Liverpool Anti-slavery Society of which Margaret Cropper was the president.
Lord Thomas Denman (1779-1854). Father-in-law of Edward Cropper. Lord Thomas Denman (1779-1854) was an abolitionist politician, and Queen Victoria's first Lord Chief Justice between 1837 and 1850. He corresponded with and met Calvin and Harriet Beecher Stowe as early as 1836. Denman's daughter Margaret (1815–99) was married to Edward Cropper of Dingle Vale. In the House of Lords Denman had proposed a motion in favour of black emancipation as early as March 1826 and supported an inquiry into slavery in the West Indies (May 1826). was instrumental in making Harriet Beecher Stowes antislavery novel ''Uncle Tom's Cabin'' the best-selling book of the 19th century and the book that Abraham Lincoln is said to have started the American Civil War. After his praise for ''Uncle Tom's Cabin
Lord Denman hoped the novel would...Urge abolition as a paramount duty to God; and even in selfish, insolent, cruel, mean, and uncivilised slave states, the cry will prevail, and emancipation will be achieved.'' Harriet Beecher Stowe would pay her own tribute to Denman ... Harriet Beecher Stowe would also comment on the strong family ties that Lord Denman had with Dingle Bank.
Rear Admiral Joseph Denman (1810–74). Brother of Margaret Cropper, brother-in-law of Edward Cropper Rear Admiral Joseph Denman (1810–74) was Lord Denman's son, the brother of Margaret Denman Cropper of Dingle Bank and the brother-in-law of Edward Cropper. Denman was a Commander in the West Africa Squadron, a Royal Navy squadron set up to intercept slave ships off the west coast of Africa. In 1839, Denman's sloop HMS
Wanderer captured five slave ships in six months and freed their captive cargo. Spanish and Portuguese slavers were still operating on the West African coast – particularly in the Gallinas Kingdom of King Siaka in modern-day Sierra Leone. In November 1840, Sir Richard Doherty, the Governor of Sierra Leone discovered that Prince Mauna, the son of King Siaka, was holding two black British subjects hostage. Governor Doherty ordered Captain Joseph Denman to rescue the mother (Fry Norman) and her child. Denman took three British warships, the
Wanderer,
Rolla and
Saracen and with a force of 120 men, he went on a ruthless and systematic campaign along the African coast, burning 'slave factories' to the ground. After freeing Fry Norman and her child, Captain Denman unilaterally drafted a treaty abolishing slavery in the Gallinas region and forced King Siaka to sign it. In total Denman destroyed eight slave factories, liberated 841 slaves and secured the expulsion of all slave traders, from the Gallinas Kingdom. One of the slave factories purported to have been destroyed by Denman was that at Lomboko, at the head of the Gallinas River. The Stephen Spielberg film
Amistad depicts the destruction of Lomboko and according to Melissa Eisen Azarian (1997) The burning of the slave factories, almost cost Denman his naval career when he was sued by the slave trader, John Thomas Buron who claimed for 'damages and trespass'. Prosecutors claimed between £100,000 and £500,000, as well as a claim for the refunding of a payment on the 13,000 further slaves that had already been given to inland African tribes. Denman was recalled to Great Britain to face trial and the case of
Buron vs Denman was heard in the British Court of Exchequer in 1848 – the court found in Denman's favour. While awaiting trial, Denman drew up detailed instructions for the suppression of the 'Middle Passage' carrying slaves from Africa to the Americas. Denman's anti-slavery plan became government policy in 1844. The Royal Navy was encouraged to destroy any slave factory they could find and stop any ship that was thought to be a slaver. The newfound powers drafted by Denman saw a sudden and dramatic drop in slave ship numbers on the 'Middle Passage' in the late 1840s and 1850s. By the time the American Civil War started in 1861 the 'Middle Passage' and slave trade had basically come to an end on the west African Coast. Joseph Denman finally ended his career as an admiral in command of the Pacific Squadron. As a favourite of Queen Victoria, Denman acted as the Queen's groom in waiting and commanded her royal yacht,
Victoria and Albert, from 1853 to 1860. Joseph Denman's died on 26 November 1874. ==Modern counter narratives on the Dingle Group and Liverpool's contribution to the abolition of slavery==