Blake's marriage to Catherine was close and devoted until his death. Blake taught Catherine to write, and she helped him colour his printed poems. Gilchrist refers to "stormy times" in the early years of the marriage. Some biographers have suggested that Blake tried to bring a concubine into the marriage bed in accordance with the beliefs of the more radical branches of the Swedenborgian Society, but other scholars have dismissed these theories as conjecture. William and Catherine's first daughter and last child might be Thel described in The Book of Thel who was conceived as dead.
In 1800, Blake moved to a cottage at Felpham, in Sussex (now West Sussex), to take up a job illustrating the works of William Hayley, a minor poet. It was in this cottage that Blake began Milton (the title page is dated 1804, but Blake continued to work on it until 1808). The preface to this work includes a poem beginning "And did those feet in ancient time", which became the words for the anthem "Jerusalem". Over time, Blake began to resent his new patron, believing that Hayley was uninterested in true artistry, and preoccupied with "the meer drudgery of business" (E724). Blake's disenchantment with Hayley has been speculated to have influenced Milton: a Poem, in which Blake wrote that "Corporeal Friends are Spiritual Enemies". (4:26, E98)
Blake's trouble with authority came to a head in August 1803, when he was involved in a physical altercation with a soldier, John Schofield. Blake was charged not only with assault, but with uttering seditious and treasonable expressions against the king. Schofield claimed that Blake had exclaimed "Damn the king. The soldiers are all slaves." Blake was cleared in the Chichester assizes of the charges. According to a report in the Sussex county paper, "[T]he invented character of [the evidence] was ... so obvious that an acquittal resulted". Schofield was later depicted wearing "mind forged manacles" in an illustration to Jerusalem.
Return to London
Blake returned to London in 1804 and began to write and illustrate Jerusalem (1804–20), his most ambitious work. Having conceived the idea of portraying the characters in Chaucer's Canterbury Tales, Blake approached the dealer Robert Cromek, with a view to marketing an engraving. Knowing Blake was too eccentric to produce a popular work, Cromek promptly commissioned Blake's friend Thomas Stothard to execute the concept. When Blake learned he had been cheated, he broke off contact with Stothard. He set up an independent exhibition in his brother's haberdashery shop at 27 Broad Street in Soho. The exhibition was designed to market his own version of the Canterbury illustration (titled The Canterbury Pilgrims), along with other works. As a result, he wrote his Descriptive Catalogue (1809), which contains what Anthony Blunt called a "brilliant analysis" of Chaucer and is regularly anthologised as a classic of Chaucer criticism. It also contained detailed explanations of his other paintings. The exhibition was very poorly attended, selling none of the temperas or watercolours. Its only review, in The Examiner, was hostile.
Also around this time (circa 1808), Blake gave vigorous expression of views on art in an extensive series of polemical annotations to the Discourses of Sir Joshua Reynolds, denouncing the British Academy as a fraud and proclaiming, "To Generalize is to be an Idiot".
In 1818, he was introduced by George Cumberland's son to a young artist named John Linnell. A blue plaque commemorates Blake and Linnell at Old Wyldes' at North End, Hampstead. Through Linnell he met Samuel Palmer, who belonged to a group of artists who called themselves the Shoreham Ancients. The group shared Blake's rejection of modern trends and his belief in a spiritual and artistic New Age. Aged 65, Blake began work on illustrations for the Book of Job, later admired by Ruskin, who compared Blake favourably to Rembrandt, and by Vaughan Williams, who based his ballet Job: A Masque for Dancing on a selection of the illustrations.
In later life Blake began to sell a great number of his works, particularly his Bible illustrations, to Thomas Butts, a patron who saw Blake more as a friend than a man whose work held artistic merit; this was typical of the opinions held of Blake throughout his life.
Dante's Divine Comedy
The commission for Dante's Divine Comedy came to Blake in 1826 through Linnell, with the aim of producing a series of engravings. Blake's death in 1827 cut short the enterprise, and only a handful of watercolours were completed, with only seven of the engravings arriving at proof form. Even so, they have evoked praise:
- '[T]he Dante watercolours are among Blake's richest achievements, engaging fully with the problem of illustrating a poem of this complexity. The mastery of watercolour has reached an even higher level than before, and is used to extraordinary effect in differentiating the atmosphere of the three states of being in the poem'.
Blake's illustrations of the poem are not merely accompanying works, but rather seem to critically revise, or furnish commentary on, certain spiritual or moral aspects of the text.
Because the project was never completed, Blake's intent may be obscured. Some indicators bolster the impression that Blake's illustrations in their totality would take issue with the text they accompany: In the margin of Homer Bearing the Sword and His Companions, Blake notes, "Every thing in Dantes Comedia shews That for Tyrannical Purposes he has made This World the Foundation of All & the Goddess Nature & not the Holy Ghost." Blake seems to dissent from Dante's admiration of the poetic works of ancient Greece, and from the apparent glee with which Dante allots punishments in Hell (as evidenced by the grim humour of the cantos).
At the same time, Blake shared Dante's distrust of materialism and the corruptive nature of power, and clearly relished the opportunity to represent the atmosphere and imagery of Dante's work pictorially. Even as he seemed to near death, Blake's central preoccupation was his feverish work on the illustrations to Dante's Inferno; he is said to have spent one of the very last shillings he possessed on a pencil to continue sketching.
Blakes's last years were spent at Fountain Court off the Strand (the property was demolished in the 1880s, when the Savoy Hotel was built). On the day of his death (12 August 1827), Blake worked relentlessly on his Dante series. Eventually, it is reported, he ceased working and turned to his wife, who was in tears by his bedside. Beholding her, Blake is said to have cried, "Stay Kate! Keep just as you are – I will draw your portrait – for you have ever been an angel to me." Having completed this portrait (now lost), Blake laid down his tools and began to sing hymns and verses. At six that evening, after promising his wife that he would be with her always, Blake died. Gilchrist reports that a female lodger in the house, present at his expiration, said, "I have been at the death, not of a man, but of a blessed angel."
George Richmond gives the following account of Blake's death in a letter to Samuel Palmer:
He died ... in a most glorious manner. He said He was going to that Country he had all His life wished to see & expressed Himself Happy, hoping for Salvation through Jesus Christ – Just before he died His Countenance became fair. His eyes Brighten'd and he burst out Singing of the things he saw in Heaven.
Catherine paid for Blake's funeral with money lent to her by Linnell. He was buried five days after his death – on the eve of his 45th wedding anniversary – at the Dissenter's burial ground in Bunhill Fields, in what is today in the Borough of Islington, London. His parents were interred in the same grounds. Present at the ceremonies were Catherine, Edward Calvert, George Richmond, Frederick Tatham and John Linnell. Following Blake's death, Catherine moved into Tatham's house as a housekeeper. She believed she was regularly visited by Blake's spirit. She continued selling his illuminated works and paintings, but entertained no business transaction without first "consulting Mr. Blake". On the day of her death, in October 1831, she was as calm and cheerful as her husband, and called out to him "as if he were only in the next room, to say she was coming to him, and it would not be long now".
On her death, Blake's manuscripts were inherited by Frederick Tatham, who burned some he deemed heretical or politically radical. Tatham was an Irvingite, one of the many fundamentalist movements of the 19th century, and opposed to any work that smacked of blasphemy. John Linnell erased sexual imagery from a number of Blake's drawings.
Since 1965, the exact location of William Blake's grave had been lost and forgotten as gravestones were taken away to create a lawn. Blake’s grave is commemorated by a stone that reads "Near by lie the remains of the poet-painter William Blake 1757–1827 and his wife Catherine Sophia 1762–1831". The memorial stone is situated approximately 20 metres away from the actual grave, which is not marked. Members of the group Friends of William Blake have rediscovered the location and intend to place a permanent memorial at the site.
Blake is recognised as a saint in the Ecclesia Gnostica Catholica. The Blake Prize for Religious Art was established in his honour in Australia in 1949. In 1957 a memorial to Blake and his wife was erected in Westminster Abbey.