Born in Cork, Ireland, and reared in Toronto, Canada, Mary Harris trained as a dressmaker and teacher before she moved in 1861 to Memphis, Tennessee, where she met and married George Jones, an iron molder and member of the International Iron Molders Union. After the death of her husband and their four children in a yellow fever epidemic in 1867, she worked as a dressmaker in Chicago. There she became interested in the plight of the working class and began attending Knights of Labor meetings. After 1877, she devoted her life to improving the lot of working people, earning a reputation as a skilled and passionate orator....