Question: What English writer born in 1812 was a schoolfellow of Henry Sewell Stokes?

Context paragraphs:
William Sewell (author): William Henry Sewell (23 January 1804–14 November 1874), English divine and author helped to found two public schools along High Anglican lines.  A devout churchman, learned scholar, and reforming schoolmaster, Sewell was strongly influenced by the Tractarians.  Born on the Newport, Isle of Wight, the second son of a solicitor and Fellow of The Queen's College, Oxford he had six brothers, four of whom became national figures.  Richard Clarke Sewell was a recognised poet, legal writer and Fellow of Magdalen College, Oxford.  Henry Sewell worked in the family firm before emigrating to become Premier of New Zealand.  James Edwards Sewell was Warden of New College, Oxford (1860-1903).  Elizabeth Sewell wrote devotional religious books and children's stories.  She founded Ventnor St Boniface School for girls.

Charles Dickens: Charles John Huffam Dickens ( ; 7 February 1812 – 9 June 1870) was an English writer and social critic.  He created some of the world's best-known fictional characters and is regarded by many as the greatest novelist of the Victorian era.  His works enjoyed unprecedented popularity during his lifetime, and by the 20th century critics and scholars had recognised him as a literary genius.  His novels and short stories enjoy lasting popularity.

Town of Christchurch by-election, 1860: The Town of Christchurch by-election in 1860 was triggered by the resignation of Richard Packer as the Member of the House of Representatives for the Town of Christchurch electorate, and occurred during the term of the 2nd New Zealand Parliament.  The previous representative of the electorate, the politician Henry Sewell, had returned after three years in England and the general expectation was that Sewell would be the sole contender for election.  The "Lyttelton Times" wrote several provocative editorials, generally endorsing Sewell for his obvious ability, but criticising him for not publicly talking about his policies and plans.  Sewell eventually arranged a public meeting the evening prior to nomination day; this was the only public meeting during the election campaign.  After a lengthy address, which was favourably received by the "Lyttelton Times", a second contender for the office put his name forward at that meeting: the publican Michael Hart.  Sewell, a former premier and one of New Zealand's most senior politicians at the time, was successful against the political novice Hart.

Town of New Plymouth by-election, 1865: The Town of New Plymouth by-election 1865 was a by-election held in the Town of New Plymouth electorate during the 3rd New Zealand Parliament, on 19 May 1865.  The by-election was caused by the resignation of the incumbent, Charles Brown, and was won unopposed by Henry Sewell.  Whilst Sewell was not a local resident, he was a member of the government through his appointment to the Legislative Council, the upper house of Parliament.  Sewell accepted the invitation to represent the electorate, as him becoming a member of the lower house was seen to strengthen the government.

Henry Sewell: Henry Sewell (7 September 1807 – 14 May 1879) was a prominent 19th-century New Zealand politician.  He was a notable campaigner for New Zealand self-government, and is generally regarded as having been the country's first Premier (an office that would later be titled "Prime Minister"), having led the Sewell Ministry in 1856.

St Mawgan: St Mawgan in Pydar (Cornish: Lanherne ) is a civil parish in Cornwall, England, United Kingdom.  The population of this parish at the 2011 census was 1,307.  The village of St Mawgan is situated four miles northeast of Newquay, and the parish also includes the hamlet of Mawgan Porth.  The nearby Royal Air Force station, RAF St. Mawgan, takes its name from the village and is next to Newquay Cornwall Airport.  The River Menalhyl runs through St Mawgan village and the valley is known as "The Vale of Lanherne".  It was the subject of a poem by poet Henry Sewell Stokes.

Sewell Ministry, 1856: The Sewell Ministry was the first responsible government in New Zealand.  It formed in 1856, but lasted only one month, from 18 April to 20 May.  From 7 May onwards, Henry Sewell was Colonial Secretary, considered to be the equivalent of Prime Minister.  Thus, Sewell became the first Prime Minister of New Zealand.

Sewell Stokes: Francis Martin Sewell Stokes (16 November 1902, London – 2 November 1979, London) was an English novelist, biographer, playwright, screenwriter, broadcaster and prison visitor.  He collaborated on a number of occasions with his brother, Leslie Stokes, an actor and later in life a BBC radio producer, with whom he shared a flat for many years overlooking the British Museum.  It was here that Sewell Stokes did much of his writing in the Reading Room, used by so many distinguished writers over the years.

R. B. Seymour Sewell: Sewell was born in 1880 in Leamington, Warwickshire.  His father was the reverend Arthur Sewell, and his mother was Mary Lee (née Waring).  His grandfather was Robert Burleigh Sewell (1810–1872), who had a number of notable siblings, including Richard Clarke Sewell (1803–1864), William Sewell (1804–1874), Henry Sewell (1807–1879), James Edwards Sewell (1810–1903), and Elizabeth Missing Sewell (1815–1906).  He studied at Cambridge (Christ's College) and St Bartholomew's Hospital, London.  He received a B.A. (Hons) from Cambridge in 1902 and qualified M.C.R.S & L.R.C.P. in 1907.

Henry Sewell Stokes: Henry Sewell Stokes (1808–1895) was a British poet.  The Cornish poet was a schoolfellow of Charles Dickens; later literary friends included Tennyson and Robert Stephen Hawker.  His great nephew, Sewell Stokes, was a novelist, biographer and playwright.

Supporting paragraphs: Henry Sewell Stokes Charles Dickens
Answer: Charles Dickens