I am looking for Morris and Catherine GRIFFITHS who married on 6 Oct 1853 at St Davids Church, Liverpool and had 6 children, 4 of whom died in infancy. They are in the 1871 and 1881 UK Censuses, living at 21 Prussia Street Liverpool, but I can find no trace of them in subsequent Census records. I also cannot find any death records of Morris or Catherine. Is anyone able to assist please?