Hi Carol, This all looks promising. This is an entry from the free reg website showing Mary's birth. Did you get email I sent?
Search Record Details County Nottinghamshire Place Nottingham Church St Mary RegisterNumber DateOfBirth BaptismDate 27 Dec 1826 Forename Mary Sex F FatherForename Isaac MotherForename Mary FatherSurname CARTLEDGE MotherSurname Abode Barracks Nottingham FatherOccupation th Dragoon Guards Notes FileNumber 11929
I had found the marriage of James and Sarah Henry Sykes, I also found a record of her birth registered in Salford in September 1861