Just had another look at this, there was a baptism of a Mary Deleney at St Anthony R.C. church Liverpool;-
born 1 July 1851, bap 6 July 1851, d.o. Wm and Martha Delany, godfather Pat Mullery (?) god mother Cath Mullery (? same name as previous) can't read address.
This does look a likely baptism but doesn't get you far, can't find William & Martha or Pat & Cath in 1851 census though it is only a few months earlier and we know they are probably in the vicinity St Anthony's (Scotland Rd area)
Also can't find a marriage for William and Martha.
Will keep looking !
Elaine
PS the Charles Bosaga, 3 mths on the 1861 census in Halifax was registered as Carle Barzaghe