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Marshall, Christopher (06 November 1709–04 May 1797), pharmacist and revolutionary leader, was born in Dublin, Ireland. His parents’ names are unknown. He received a classical education in England and developed an interest in chemistry. Marshall, a Quaker, married Sarah Thompson in 1735; they had three sons. His second marriage to Abigail, a Philadelphia Quaker, ended with her death in 1782. After moving to Philadelphia in 1727, Marshall started a pharmaceutical company. He was a religious man and in 1758 served as one of Philadelphia’s overseers of the poor....