Hi,
This is from 
www.lan-opc.org.ukMarriage: 16 Jul 1846 St Patrick, Liverpool, Lancashire, England
James Campbell - 
Caroline Walker - 
    Witness: James Lang; Louisa Walker
    Register: Marriages 1827 - 1848, Page 148, Entry 1
    Source: LDS Film 396378
and from 1851 census:-
Class: HO107; Piece: 2186; Folio: 408; Page: 12; GSU roll: 87193
37 Chester Street, Toxteth Park, Liverpool 
James Campbell 27 head, book keeper to metal merchant, born Liverpool
Caroline Campbell 24, wife, born Shrewsbury
Louisa Campbell 3, dau, born Liverpool 
Mary Campbell 9 months, dau, born Liverpool
Ellen Kegan 20, servant, born Sligo, Ireland
Luzzu