Catherine Clarkson (née Buck; 1772-1856): A native of the Suffolk town of Bury St Edmunds, she married Thomas Clarkson in 1796. She shared his radicalism and became close friends with the Wordsworths, Southey, Coleridge and Crabb Robinson. Owing to her illness, she was treated by Beddoes in Bristol in 1804 and 1805; she and her husband moved south to Suffolk from the Lake District for the sake of her health in 1806.

Henry Colburn (1784/5-1855): One of the leading publishers of the first half of the nineteenth century. After setting up in business in 1806 he became well-known for promoting popular fiction, including ‘silver fork’ society novels, naval adventures and historical novels. He also had an interest in numerous periodicals, including the New Monthly Magazine, the Literary Gazette and the Athenaeum, and gained a reputation for ‘puffing’ his own authors in their pages.

(David) Hartley Coleridge (1796-1849): Eldest son of Samuel Taylor Coleridge and Sarah Fricker; and Southey’s nephew, nicknamed ‘Job’ for his seriousness as a child. Southey played a considerable part in Hartley’s upbringing after his father separated from his mother, leaving his children in Southey’s care at Greta Hall. In 1808 Hartley was sent to Ambleside School and in 1815 Southey was able to organise sufficient donations from friends and family to allow Hartley to proceed to Merton, College, Oxford.

John Cawood (d. 1846): Tory ironfounder from Leeds. He took an active interest in issues relating to the poor and in 1819 was part of a delegation sent by the Leeds Poor Law authority to inspect Robert Owen’s New Lanark mills. He later (1844) became the first chairman of the new poor law authority in Leeds. In 1819 he wrote to Southey, sending a pamphlet he had written on the condition of the poor, probably A Plain Statement, Exhibiting the Whole of What Has Been Hyperbolically Designated, The Parish Controversy (1819).

John Chapman and Co: Merchant shipping company, whose offices were at 2 Leadenhall Street, London. In 1822 Southey used them to send a consignment of books to Copenhagen. Southey addressed his letter of 11 October 1822 to John Chapman, in the belief that the firm was still headed by its founder, John Chapman ‘of Whitby’ (1732–1822), though he had died on 5 January 1822. This Chapman was a Quaker and originally a supplier of canvas for sails, but his firm expanded under his ten sons into a leading shipping agent, insurer and bank.

Thomas Clarkson (1760-1846): Campaigner for the abolition of the slave trade, and a friend of the Wordsworths, Coleridge and Southey. He moved to the Lake District in 1794 and lived in retirement at Eusemere, near Pooley Bridge, Ullswater, until 1806. Clarkson and his wife returned to her native Suffolk in 1806, and remained there until his death. He returned to the campaign against the slave trade in 1804 and wrote ceaselessly in the cause until the passing of the 1833 Act abolishing slavery in the British empire. He also wrote admiringly of the Quakers.

William Cobbett (1763-1835): A journalist whose weekly paper, the Political Register, took an anti-jacobinical line until 1804, but thereafter became progressively more radical, supporting Burdett at the Westminster election of 1807. From 1810 to 1812 he was imprisoned after being prosecuted by the government for criticising flogging in the militia. Cobbett’s political development was the exact opposite of Southey’s and Southey was a consistent critic of Cobbett.

Derwent Coleridge (1800-1883): Third son of Samuel Taylor Coleridge and Sarah Fricker; and Southey’s nephew. Anglican clergyman, writer and educationist. First Principal of St Mark’s teacher training college in Chelsea 1841–1864.

Richard Cattermole (1795?-1858): Writer and Anglican clergyman. He married Maria Frances Giles in 1825. Coleridge, whom Cattermole knew through the Royal Society of Literature, stood as godfather to their son, George Richard Coleridge Cattermole (bap. 1828). Cattermole was secretary to the Royal Society of Literature from 1823–1852 and in 1843 became one of the first members of the newly established Society of British Authors. Cattermole’s own writings encompassed theology, literature, art and history.

Anthony Carlisle (1768-1840): Surgeon and anatomist. Born at Stillington, Durham, the third son of Thomas Carlisle and his first wife Barbara (d. 1768). Studied medicine in York, Durham and London, and was appointed surgeon to the Westminster Hospital in 1793. He married Martha Symmons in 1800 and in the same year was one of the founding members of the Royal College of Surgeons, serving as its president in 1829 and 1839. He moved in metropolitan literary and scientific circles, attending Mary Wollstonecraft on her death-bed in 1797.