John Mangnall was born in 1872 in Bolton and was the son of Peter Platt Mangnall (1832) and Betty. In 1881 he was living at 13 Peel Street, Bolton. In 1891 he was living at 17 Glynn Street, Bolton, and working as a railway clerk. He married Rachel Pendlebury in 1895. In 1901 he was working as a railway clerk and living at 29 Osborne Grove, Bolton. In 1911 he was living at 38 Bradford Avenue, Bolton, and working as a railway clerk.

Sources
• 1. 1881 Census. 13 Peel St, Gt. Bolton. John Mangnall. Son. Age 9. Scholar. Born Bolton. • 2. 1891 Census. 17 Glynn St, Bolton. John Mangnall. Son. Age 19. Clerk to Railway. Born Bolton. • 3. 1901 Census. 29 Osborne Gr, Bolton. John Mangnall. Head. Age 29. Railway Clerk. Born Bolton. • 4. 1911 Census. 38 Bradford Avenue, Bolton. John Mangnall. Head. Age 39. Railway Clerk. Born Bolton.