It is the most famous act of self-mutilation in the history of art, but the exact motivation – love? Jealousy? Rage? – for Vincent van Gogh’s decision to cut off his ear has remained unknown for more than a century. 
 
 According to a new study of his time in Provence, the gruesome procedure was in fact inspired by the news his brother Theo, his most loyal confidant and financial supporter, was about to marry after a whirlwind romance. The research throws doubt on the popular theory that Van Gogh took a razor to his ear after a passionate row with fellow artist Paul Gauguin. 
 
 It was known that Van Gogh was distressed by news of the marriage – which could have threatened the closeness of their relationship, and also left Theo with a wife and family to support, unable to fund a struggling brother who had yet to sell a single canvas – but it had been thought that he learned of it only after the incident. 
 
 However, the writer Martin Bailey, for his new book Studio of the South, has uncovered evidence that Van Gogh almost certainly learned of it in a letter from Theo delivered on Sunday 23 December 1888. 
 
 Later that night there was indeed a quarrel, after the two artists had spent the day working penned up together by continuous rain, and Gauguin would leave the house threatening to return to Paris – but the trigger for Van Gogh’s despair was not that, but the news from his brother, Bailey believes. 
 
 Theo’s letter enclosed 100 francs, but also the news that only a fortnight earlier he had met an old friend, Jo Bonger, who had previously turned him down. This time, within a week, she had agreed to marry him. 
 
 Bailey has established that Theo had already written to his mother asking permission to marry, and that Jo had written to her older brother, who responded with a telegram of congratulations that arrived on 23 December. Bailey is sure that Theo would have written to his brother at the same time, and that the news was in the letter that was delivered to the famous Yellow House at Arles, also on the 23rd. 
 
 The razor slash left Van Gogh bleeding copiously, but he wrapped the piece of ear in paper and walked to his favourite brothel, where he gave it to a young woman he knew. Another recent book, by Bernadette Murphy, suggested that this was not a prostitute, but a local farmer’s daughter working there as a servant. Murphy also uncovered a drawing, made by a doctor long after the event, suggesting that Van Gogh had cut the entire ear off, and not just the lobe. In any event, the poor woman opened the parcel, fainted on the spot, Van Gogh fled, and the police were called. 
 
 Gauguin returned to the house the following morning, Christmas Eve, where he found the police on the doorstep, and the artist lying in his blood-soaked bed. Theo, who had been hoping to spend a first Christmas with his fiancee, arrived on Christmas Day to visit his brother in hospital. Van Gogh – after briefly being locked in an isolation room – was discharged on 7 January, and wrote to Theo: “Soon the fine days will come and I’ll start on the orchards in blossom again.” Despite a further collapse and another spell in hospital, he continued to paint until he left Arles in April. 
 
 The paintings from this desperate period in his life are among his best loved, and Bailey has also traced the surprising afterlife of the bed in his famous The Bedroom. It was one of two double beds bought when he was furnishing the rented house to welcome Gauguin, and Bailey touchingly suggests: “The twin pillows in the painting suggest that he still had a lingering hope that he might eventually share his bed with a woman.” 
 
 In 1890, Van Gogh had the bed sent by rail to Auvers, north of Paris, where he created the last works before his suicide in July. Theo died the following year, and his widow inherited the bed and used it in a small guesthouse she ran in the Netherlands. There was talk of returning it to a museum in the Yellow House, but the building was destroyed in the second world war, and the bed was instead donated by his nephew to an appeal for furniture to help villagers whose homes had been destroyed. Bailey has been unable to trace it further, but speculates that the sturdy wooden bed could still be out there somewhere, unrecognised. 
 
 
 
 Van Gogh is now one of the best known artists in the world, but it is a measure of how obscure he was in the 1880s that of the four contemporary newspaper accounts of the ear mutilation that Bailey has traced, two spelled his name wrong, and a third, which reported that he was “suffering cruelly” from the injury, described him as Polish – “peintre de nationalité polonaise”. 
 
 
 
 • Studio of the South: Van Gogh in Provence is published by Frances Lincoln, price £25, on November 3. ||||| On this day in 1888, Dutch painter Vincent van Gogh, suffering from severe depression, cuts off the lower part of his left ear with a razor while staying in Arles, France.He later documented the event in a painting titled Self-Portrait with Bandaged Ear. Today, Van Gogh is regarded as an artistic genius and his masterpieces sell for record-breaking prices; however, during his lifetime, he was a poster boy for tortured starving artists and sold only one painting. 
 
 Vincent Willem van Gogh was born on March 30, 1853, in the Netherlands. He had a difficult, nervous personality and worked unsuccessfully at an art gallery and then as a preacher among poor miners in Belgium. In 1880, he decided to become an artist. His work from this period–the most famous of which is The Potato Eaters (1885)–is dark and somber and reflective of the experiences he had among peasants and impoverished miners. 
 
 In 1886, Van Gogh moved to Paris where his younger brother Theo, with whom he was close, lived. Theo, an art dealer, supported his brother financially and introduced him to a number of artists, including Paul Gauguin, Camille Pisarro and Georges Seurat. Influenced by these and other painters, Van Gogh’s own artistic style lightened up and he began using more color. 
 
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 In 1888, Van Gogh rented a house in Arles in the south of France, where he hoped to found an artists’ colony and be less of a burden to his brother. In Arles, Van Gogh painted vivid scenes from the countryside as well as still-lifes, including his famous sunflower series. Gauguin came to stay with him in Arles and the two men worked together for almost two months. However, tensions developed and on December 23, in a fit of dementia, Van Gogh threatened his friend with a knife before turning it on himself and mutilating his ear lobe. Afterward, he allegedly wrapped up the ear and gave it to a prostitute at a nearby brothel. Following that incident, Van Gogh was hospitalized in Arles and then checked himself into a mental institution in Saint-Remy for a year. During his stay in Saint-Remy, he fluctuated between periods of madness and intense creativity, in which he produced some of his best and most well-known works, including Starry Night and Irises. 
 
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 In May 1890, Van Gogh moved to Auvers-sur-Oise, near Paris, where he continued to be plagued by despair and loneliness. On July 27, 1890, he shot himself and died two days later at age 37.
– Vincent Van Gogh may have cut off his own ear in response to what most people would consider happy news, according to a writer who has taken a fresh look at one of history's famous self-mutilations. Martin Bailey says Van Gogh didn't take a razor to his ear because of an argument with fellow artist Paul Gauguin, though the two did quarrel that day in 1888, the Guardian reports. Instead, Van Gogh cut his ear off because he had learned that his brother, Theo, was going to get married, Bailey says. He says the struggling artist feared that the marriage would end his close relationship with his brother—and that it would cause Theo to cut off the financial support Van Gogh relied on. Bailey says that Van Gogh didn't learn of the engagement while he was recovering in hospital, as previously thought, but in a letter that was delivered to him in Provence just hours before the self-mutilation. "Had Van Gogh been elated by the engagement, it is virtually inconceivable that he would have sliced off part of his ear a few hours after receiving Theo’s news, whatever other difficulties he was facing," Bailey writes in new book Studio of the South, per the Telegraph. Bailey, writing in the Art Newspaper, says his research into Van Gogh's years in Provence has also yielded clues to the whereabouts of Van Gogh's famous bed. He believes it was donated to needy people in a small Dutch town months after the end of World War II. (This museum grew an ear from Van Gogh DNA.)