Could this be the family in 1871 (with Louisa) with the wifes surname and a few more mistakes

Living at Athlestan Road, St Mary, Poplar, London
William Jarmain Head 1824 Traveller Chelsea, Middlesex, England
Priscilla Jarmain Wife 40 Walworth, Surrey, England
Alfred Jarmain Son 17 Clerk Walworth, Surrey, England
Julia Jarmain Daughter 13 Islington, Middlesex, England
Alice Jarmain Daughter 11 Islington, Middlesex, England
Louisa Jarmain Daughter 9 Islington, Middlesex, England
Samuel Jarmain Son 7 Islington, Middlesex, England
Grace Jarmain Daughter 1 Islington, Middlesex, England
John Dyer Boarder 38 Deptford, Kent, England