An Irish-born American working at various points as a dressmaker and schoolteacher, Jones pivoted her focus to union and community organizing and activism after experiencing two major, personal tragedies: the death of her husband and four children from yellow fever in 1867 Memphis, and the destruction of her dress shop in the Great Chicago Fire of 1871. The impassioned figure would come to be known as “the most dangerous woman in America” while working to secure rights for mine workers and ban child labor.