Abraham Darby, in his later life called Abraham Darby the Elder, now sometimes known for convenience as Abraham Darby I, was an English ironmaster and foundryman. Born into an English Quaker family that played an important role in the Industrial Revolution, Darby developed a method of producing pig iron in a blast furnace fuelled by coke rather than charcoal. This was a major step forward in the production of iron as a raw material for the Industrial Revolution.