Mary Everest was a self-taught mathematician and the wife of George Boole. She was also the niece of George Everest.
Mary Everest was born 11 March 1832 in Wickwar, Gloucestershire, England. She was the daughter of Thomas Roupall Everest, the Rector of Wickwar, and Mary Ryall. She spent her early years in France, where she was tutored in mathematics. She returned to England at age 11, and continued her self-education in Mathematics.
Mary met George Boole in Cork, Ireland in1850, when she went to visit her uncle, John Ryall, who was a professor of Greek at Queen's College Cork. Mary and George became friends, and George began tutoring her in mathematics. They married in 1855, after Mary's father died and left her destitute.
Despite a 17-year age difference, Mary and George had a happy marriage. They had five daughters by 1864: Mary Ellen, Margaret, Alicia, Lucy, and Ethel Lilian. Mary advised her husband in his work, and often attended his lectures, which women did not do during the that time period.
Mary became widowed at the age of 32 in 1864. She became a librarian at Queen's College, London, although she wanted to teach. But during this time, women were not allowed to teach or earn degrees. Mary began privately tutoring students in mathematics, using fun methods such as "curve-stitching".
At he age of 50, Mary began publishing books on a variety of topics. Besides mathematics, her interests included spiritualism, the occult, parapsychology, philosophy, and science. She wrote five books by 1911.
Mary's health began to fail and she died in 1916 at the age of 84, in Kensington, London, England. 
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