Mary G. Harris Jones (1837 (baptized) – November 30, 1930), known as Mother Jones from 1897 onwards, was an Irish-born American labor organizer, former schoolteacher and dressmaker who became a prominent union organizer, community organizer, and activist. She helped coordinate major strikes, secure bans on child labor, and co-founded the Industrial Workers of the World (IWW). After Jones's husband and four children all died of yellow fever in 1867 and her dress shop was destroyed in the Great Chicago Fire of 1871, she became an organizer for the Knights of Labor and the United Mine Workers union. In 1902, she was called "the most dangerous woman in America" for her success in organizing mine workers and their families against the mine owners. In 1903, to protest the lax enforcement of the child labor laws in the Pennsylvania mines and silk mills, she organized a children's march from Philadelphia to the home of President Theodore Roosevelt in New York. Early life Mary G. Harris was born on the north side of Cork, the daughter of Roman Catholic tenant farmers Richard Harris and Ellen (née Cotter) Harris. Her exact date of birth is uncertain; she was baptized on August 1, 1837. Harris and her family were victims of the Great Famine, as were many other Irish families. The famine drove more than a million families, including the Harrises, to immigrate to North America when Harris was 10. Formative years Mary was a teenager when her family immigrated to Canada. In Canada (and later in the United States), the Harris family were victims of discrimination due to their immigrant status as well as their Catholic faith and Irish heritage. Mary received an education in Toronto at the Toronto Normal School, which was tuition-free and even paid a stipend to each student of one dollar per week for every semester completed. Mary did not graduate from the Toronto Normal School, but she was able to undergo enough training to occupy a teaching position at a convent in Monroe, Michigan, on August 31, 1859 at the age of 23. She was paid eight dollars per month, but the school was described as a "depressing place". After tiring of her assumed profession, she moved first to Chicago and then to Memphis, where in 1861 she married George E. Jones, a member and organizer of the National Union of Iron Moulders, which later became the International Molders