Hi Roy
Thanks for your offer to help further. Sorry about the delay in replying - internet problems. If you are still willing to look into this, here is the story....
The Mary Ann Turin Fisher was a long shot. I am trying to find a Mary Ann Smart who gives her birth year in a range of dates from 1846 - 1854 and born in Brighton; her parents William Smart, a gardener and Ellen Turner. My problem... there doesn't appear to be a William Smart / Ellen Turner marriage (Free BMD) however I did find in 1852 a marriage to Ellen Turpin (hence the long shot enquiry re M A Turin Fisher) and another 1852 marriage to Eliza Hayler aka Ellen. 1871 Census has a Mary Smart 24, with William Smart 51, widower in Brighton Sussex. If this is the correct MA Smart she was obviously born prior to her mother marrying William Smart and must have taken his name after 1852. So her registration must be under another name but which one???
St Nicholas Brighton has a baptism for Mary Ann Smart (mother Eliza Smart) in 1852 and another Mary Smart in 1852 (parents William & Georgina Smart).
1851C has an Eliza Hayler & son James living in same household as William & Georgina Smart and there is a death entry for a Georgina Smart in 1852 at Brighton, so this William may have married this Eliza. Haven't been able to trace any Mary Ann

in 1851 or 1861 living with her parents.
If you are still keen, any help would be appreciated