Thanks Judith... I had found most of that yesterday...
John Mantell/Elizabeth Froggatt got married at Independant Congregational Church, Newport Pagnell by licence.......witnesses Mary Balshaw (she was wife of James Balshaw the congregational minister who officiated) and Jane Hackett, both lived in Newport Pagnell
Elizabeth Froggatt had a non-conformist baptism on 12/8/1829 at Hackney, Middx, daughter of Benjamin Froggatt who married Anstis Apsey at Clerkenwell in 1828. Her brother Samuel Froggatt also had non-conformist baptism on 19/12/1833 at Lambeth. I've found the family on 1841 & 1851 census, father Benjamin is an optician. In 1861 Elizabeth b 1830 Hackney, single, boarder in Carisbrooke, Isle of Wight, & is British school mistress. I've not found her in 1871 but in 1881 in Paddington is a Elizabeth Froggett age 50 born Middx, London teacher of music, but she's down as married. Mother Anstis died 1878 & father Benjamin died 9 Sept 1882 both in Brentford RD, where his probate calendar entry says 'proved by Samuel Froggatt, son, of Oxford, professor of music & Elizabeth Froggatt, daughter, spinster of Optic villa, Isleworth'.... which is where Benjamin is in 1881. London Electoral Register has entries for Benjamin Froggatt from 1857 to 1880 Isleworth, living at Optic Villa, Hanworth Road, Hounslow.
John