John Mangnall was born in 1728 and was the son of Lawrence Mangnall (1695) and Alice Coupe. He married Margaret Gregory on 8th November 1746 in Deane.

Sources
• 1. Paul Foley’s data. John Mangnall, b. 1728. Father: Lawrence. Mother: Alice Coupe. Married Margaret Gregory, 8 Nov 1746, Deane.