William Mangnall was the son of Henry Mangnall (1800) and Mary and was born in Farnworth in 1843. In 1851 he was living in King Street, Farnworth. In 1861 he was still living in King Street and was working as a spindle maker.

Sources
• 1. 1851 Census. King St, Farnworth. William Mangnall. Son. Age 7. Scholar. Born Farnworth. • 2. 1861 Census. King St, Farnworth. William Mangnall. Son. Age 18. Spindle Maker. Born Westhoughton.