The core of modern Sheffield was historically a small market town in the [[Strafforth]] hundred of the [[West Riding of Yorkshire]]. Urban expansion in the 19th century saw the city's southern suburbs expand into northern Derbyshire, though the city had its own county borough council. | The core of modern Sheffield was historically a small market town in the [[Strafforth]] hundred of the [[West Riding of Yorkshire]]. Urban expansion in the 19th century saw the city's southern suburbs expand into northern Derbyshire, though the city had its own county borough council. |