Question: What era was the man associated with Fanny Talbot the leading art critic of?

full_context: Document 1: Capability Brown: Lancelot Brown (born c. 1715–16, baptised 30 August 1716 – 6 February 1783), more commonly known with the byname Capability Brown, was an English landscape architect. He is remembered as "the last of the great English 18th century artists to be accorded his due" and "England's greatest gardener". He designed over 170 parks, many of which still endure. He was nicknamed "Capability" because he would tell his clients that their property had "capability" for improvement. His influence was so great that the contributions to the English garden made by his predecessors Charles Bridgeman and William Kent are often overlooked; even Kent's apologist Horace Walpole allowed that Kent had been followed by "a very able master".
Document 2: Modern Painters: Modern Painters (1843–60) is a five-volume work by the eminent Victorian art critic, John Ruskin, begun when he was 24 years old. Ruskin argues that recent painters emerging from the tradition of the picturesque are superior in the art of landscape to the old masters. The book was primarily written as a defence of the later work of J.M.W. Turner. Ruskin used the book to argue that art should devote itself to the accurate documentation of nature. In Ruskin's view, Turner had developed from early detailed documentation of nature to a later more profound insight into natural forces and atmospheric effects. It was in his 1842 visit to Switzerland that Ruskin collected material used to form the basis of Vol One.
Document 3: Pamela Neville-Sington: Pamela A. Neville-Sington (30 March 1959 - 1 March 2017) was a literary biographer and authority on the life and works of Fanny Trollope, Anthony Trollope, and Robert Browning.
Document 4: Ellen Heaton: Ellen Heaton (1816–1894) was a philanthropist and art collector in Leeds, best known for her patronage of and friendships with members and associates of the Pre-Raphaelite Brotherhood and the influential art critic John Ruskin.
Document 5: Ruskin College: Ruskin College, originally known as Ruskin Hall, Oxford, is an independent educational institution in Oxford, England. It is named after the essayist and social critic John Ruskin (1819–1900) and specialises in providing educational opportunities for adults with few or no qualifications.
Document 6: John Ruskin (painting): John Ruskin is a painting of the leading Victorian art critic John Ruskin (1819–1900). It was painted by the Pre-Raphaelite artist John Everett Millais (1829–1896) during 1853–54. John Ruskin was an early advocate of the Pre-Raphaelite group of artists and part of their success was due to his efforts.
Document 7: Ruskin Pottery: The Ruskin Pottery was an English pottery studio founded in 1898 by Edward R. Taylor, the first Principal of both the Lincoln School of Art and the Birmingham School of Art, to be run by his son, William Howson Taylor, formerly a student there. It was named after the artist, writer and social thinker John Ruskin, as the Taylors agreed with, and followed the tenets of Ruskin. The pottery was situated at 173-174 Oldbury Road, Smethwick, then in Staffordshire (now part of Sandwell, in the West Midlands county).
Document 8: Ruskin Colony: The Ruskin Colony (or Ruskin Commonwealth Association) was a utopian socialist colony which existed near Tennessee City in Dickson County, Tennessee from 1894 to 1896. The colony moved to a slightly more permanent second settlement on an old farm five miles north from 1896 to 1899, and saw another brief incarnation near Waycross, in southern Georgia, from 1899 until it finally dissolved in 1901. Its regional location within the Southern United States set it apart from many other similar utopian projects of the era. At its high point, the population was around 250. The colony was named after John Ruskin, the English socialist writer. A cave on the colony's second property in Dickson County still carries his name. The site of the colony's second settlement in Dickson County is listed on the National Register of Historic Places.
Document 9: Elizabeth Carne: Elizabeth Catherine Thomas Carne (1817–1873) was a British author and natural philosopher, geologist, conchologist, mineral collector and philanthropist. In later years, following her father's death in post, she also became a banker. Today we would probably place her contributions to science in the realm of human ecology, writes a recent author. She was the fifth child of eight children (three sons and five daughters) born to Joseph Carne, FRS, and his wife Mary Thomas of Glamorgan. Elizabeth was born at Rivière House, in the parish of Phillack, near Hayle, Cornwall, and baptised in Phillack church on 15 May 1820. At Rivière House, owned by the Cornish Copper Company of which her father was the Company Director, the cellars were fitted out as laboratories where smelting processes of copper and tin were tested, and minerals and rocks studied for their constituents. To that laboratory had come, before she was born, Davies Gilbert, PFRS, bringing with him the young Humphry Davy to view the workings of a scientific environment. Born into an influential and wealthy Methodist family of mining agents and merchants, Elizabeth was acutely aware throughout her life of poverty and deprivation in surrounding mining areas, and the dire need for education and social support for those less fortunate. She read widely, studied mathematics, the classics, and learned several languages. Both her grandfather, often styled 'the Father of Cornish Methodism', and her father had been staunch and active Wesleyan Methodist class leaders within the Church of England, and the local Methodist book room was lodged in their home. Educated at home in Chapel Street, Penzance, with her sisters, she assisted her father with his extensive mineral collections, and shared his keen interest in geological formations, age and density. A close and devoted friend, with whom she regularly corresponded, was the notable Quaker diarist, Caroline Fox of Falmouth's distinguished shipping and mining family.
Document 10: The Seven Lamps of Architecture: The Seven Lamps of Architecture is an extended essay, first published in May 1849 and written by the English art critic and theorist John Ruskin. The 'lamps' of the title are Ruskin's principles of architecture, which he later enlarged upon in the three-volume "The Stones of Venice". To an extent, they codified some of the contemporary thinking behind the Gothic Revival. At the time of its publication A. W. N. Pugin and others had already advanced the ideas of the Revival and it was well under way in practice. Ruskin offered little new to the debate, but the book helped to capture and summarise the thoughts of the movement. "The Seven Lamps" also proved a great popular success, and received the approval of the ecclesiologists typified by the Cambridge Camden Society, who criticised in their publication "The Ecclesiologist" lapses committed by modern architects in ecclesiastical commissions.
Document 11: Sutton Place, Surrey: Sutton Place, 3 miles north-east of Guildford in Surrey, is a Grade I listed Tudor manor house built c.1525 by Sir Richard Weston (d.1541), courtier of Henry VIII. It is of great importance to art history in showing some of the earliest traces of Italianate renaissance design elements in English architecture. In modern times, the estate has had a series of wealthy owners, a trend started by J. Paul Getty, then the world's richest private citizen, who chose to spend the last 17 years of his life there. Its current owner is the Russian billionaire Alisher Usmanov. A definitive history of the house and manor, first published in 1893, was written by Frederic Harrison (d.1923), jurist and historian, whose father had acquired the lease in 1874.
Document 12: Fanny Talbot: Fanny Talbot (née) Browne (1824–1917) was a landowner and philanthropist, and a friend and correspondent of the influential art critic John Ruskin. She is noted for donating the first property—4.5 acres of land known as Cliff of Light ("Dinas Oleu" in Welsh), at Barmouth, Gwynedd—to the National Trust.
Document 13: John William Waterhouse: John William Waterhouse {'1': ", '2': ", '3': ", '4': "} (6 April 1849 – 10 February 1917) was an English painter known for working in the Pre-Raphaelite style. He worked several decades after the breakup of the Pre-Raphaelite Brotherhood, which had seen its heyday in the mid-nineteenth century, leading to his sobriquet "the modern Pre-Raphaelite". Borrowing stylistic influences not only from the earlier Pre-Raphaelites but also from his contemporaries, the Impressionists, his artworks were known for their depictions of women from both ancient Greek mythology and Arthurian legend.
Document 14: John Ruskin: John Ruskin (8 February 1819 – 20 January 1900) was the leading English art critic of the Victorian era, as well as an art patron, draughtsman, watercolourist, a prominent social thinker and philanthropist. He wrote on subjects as varied as geology, architecture, myth, ornithology, literature, education, botany and political economy. His writing styles and literary forms were equally varied. Ruskin also penned essays and treatises, poetry and lectures, travel guides and manuals, letters and even a fairy tale. The elaborate style that characterised his earliest writing on art was later superseded by a preference for plainer language designed to communicate his ideas more effectively. In all of his writing, he emphasised the connections between nature, art and society. He also made detailed sketches and paintings of rocks, plants, birds, landscapes, and architectural structures and ornamentation.
Document 15: Raynham Hall: Raynham Hall is a country house in Norfolk, England. For nearly 400 years it has been the seat of the Townshend family. The hall gave its name to the five estate villages, known as The Raynhams, and is reported to be haunted, providing the scene for possibly the most famous ghost photo of all time, the famous Brown Lady descending the staircase. However, the ghost has been allegedly seen infrequently since the photo was taken. Its most famous resident was Charles Townshend, 2nd Viscount Townshend (1674–1738), leader in the House of Lords.
ground_truth: Victorian era