Lawrence Mangnall was born in 1795 and christened on 9th August 1795, probably in Westhoughton. He was the son of William Mangnall (1762) and Ann Harrison. In 1820 he was cited in the Lancashire County Quarter Sessions with a Thomas Harrison, for a prosecution. He married a woman called Immin around 1821. In 1841 he was living in Dobb Brow, Deane - later Westhoughton - and working as a cotton weaver. He was described as a weaver in 1841 and died aged 49 of enteritis in Dob Brow, Westhoughton in 1846.

Sources
• 1. International Genealogical Index. Laurence Mangnall. Christened 9 August 1795, Westhoughton. Father: William. Mother: Ann. • 2. International Genealogical Index. Lawrence Mangnall listed as the father of Peter, Thomas, Abel and Immin Mangel. • 3. Peter Mangnall's Marriage Certificate. Listed as the father of Peter Mangnall on Peter's marriage certificate, 1847. Weaver. • 4. Lancashire County Quarter Sessions, QSP/2766/160. Salford: Easter 1820 - Bill of costs of prosecution of Lawrence Mangnall and Thomas Harrison. • 5. 1841 Census. Dobb Brow, Deane. Lawrence Mangnall. Age 45. Cotton Weaver. Born Lancashire. • 6. Death Registers. Mar. 1846. Mangnall, Lawrence. Bolton. 21. 150. • 7. Death Certificate. 1846. Westhoughton. No. 377. Twenty fifth of February 1846 at Dob’s Brow Westhoughton. Lawrence Mangnall, Male, 49 years. Cotton Weaver. Cause of death: Enteritis, 12 hours Certified. Informant: Abel Mangnall, present at the death, Dob’s Brow, Westhoughton. Registered: twenty seventh of February 1846, Jas Palmington, Registrar.