Mary G. Harris Jones, known as Mother Jones, an Irish-born American schoolteacher and dressmaker who becomes a prominent union organiser, community organiser, and activist, is baptised on August 1, 1837, in Cork, County Cork. Her exact date of birth is uncertain. She is once deemed “the most dangerous woman in America” because of her union activities.

Jones is the daughter of Richard Harris, a Roman Catholic tenant farmer and railway labourer, and Ellen (née Cotter) Harris. She and her family are victims of the Great Famine, as are many other Irish families of the time. The famine forces more than a million families, including the Harrises, to immigrate to North America when she is ten years old. She lives in the United States and Canada, where she attends and later teaches in a Roman Catholic normal school in Toronto. In the United States she teaches in a convent school in Monroe, Michigan and works as a seamstress. In 1861 she marries George Jones, an iron-moulder and labour union member in Memphis, Tennessee. After the death of her husband and their four children in a yellow fever epidemic in 1867, she relocates to Chicago, Illinois, where she becomes involved with an early industrial union, the Knights of Labor. Her seamstress shop is destroyed in the Great Chicago Fire of 1871.

In the 1890s Jones becomes known as ‘Mother’ Jones and begins a long association with socialist causes and the United Mine Workers of America. She attends the founding convention of Social Democracy of America, later known as the Cooperative Brotherhood, in 1897 and in the same year organises support and publicity for striking bituminous coal miners in West Virginia, including a children’s march and parades of farmers delivering food to the miners’ camp. These types of defiant mass action become her trademark. Notable activities include organising women in support of an 1899 anthracite coal strike in eastern Pennsylvania, directing strikes of young women working in textile mills, a 1903 ‘children’s crusade’ against child labour which includes a ninety-mile march from Philadelphia to New York City, participating in 1905 in the founding convention of the Industrial Workers of the World, a radical labour union committed to the organisation of unskilled workers, campaigning for the release of Mexican revolutionaries imprisoned in American jails, and testifying in 1915 in congressional hearings against the abuse of corporate power by Rockefeller interests.

Jones reportedly meets with James Connolly, Irish socialist and labour organiser, in New York City in 1910. She is arrested for the first time for violating a federal injunction during a miners’ strike in West Virginia in 1902. In 1904, during a Colorado miners’ campaign, she has to avoid the authorities to escape possible deportation. During a 1914 strike in Ludlow, Colorado, she is imprisoned without trial for nine weeks. In 1919 she is arrested in Pennsylvania during a steelworkers’ strike for defending freedom of speech and the right of workers to organise unions. She remains active in the labour movement and radical causes into her nineties.

During her later years, Jones lives with her friends Walter and Lillie May Burgess on their farm in what is now Adelphi, Maryland. She celebrates her self-proclaimed 100th birthday there on May 1, 1930 and is filmed making a statement for a newsreel.

Jones dies on November 30, 1930 at the Burgess farm then in Silver Spring, Maryland, though now part of Adelphi. There is a funeral Mass at St. Gabriel’s in Washington, D.C. She is buried in the Union Miners Cemetery in Mount Olive, Illinois, alongside miners who died in the 1898 Battle of Virden.

In 1932, about 15,000 Illinois mine workers gather in Mount Olive to protest against the United Mine Workers, which soon becomes the Progressive Mine Workers of America. Convinced that they have acted in the spirit of Mother Jones, the miners decide to place a proper headstone on her grave. By 1936, the miners have saved up more than $16,000 and are able to purchase “eighty tons of Minnesota pink granite, with bronze statues of two miners flanking a twenty-foot shaft featuring a bas-relief of Mother Jones at its center.” On October 11, 1936, also known as Miners’ Day, an estimated 50,000 people arrive at Mother Jones’s grave to see the new gravestone and memorial. Since then, October 11 is not only known as Miners’ Day but is also referred to and celebrated in Mount Olive as “Mother Jones’s Day.”

The farm where she died begins to advertise itself as the “Mother Jones Rest Home” in 1932, before being sold to a Baptist church in 1956. The site is now marked with a Maryland Historical Trust marker, and a nearby elementary school is named in her honor.