Robert Back, seaman, son of Edward Back, Commercial Traveller and Charlotte Mayland married Eliza Home, dau. of George Home and Ann Cameron, on 4/5/1857 at Leith, Midlothian.
The surname seems to switch between Bach and Back.
Can't find Robert's baptism BUT have found parents marriage - again slight variation in names.
Edmund Bach married Charlotte Myland 12/5/1827 St. Marylebone.
Found just one baptism:
Edmund Bach bp.2/3/1828 St. Sepulchre, London, son of Edmund and Charlotte. Edmund's occupation 'Writer'.
What with Edmund/Edward and Bach/Back it's difficult trying to pursue this.
I did find an Edmund Bach aged 36 living in St. Anne, Soho, London who's described as 'Asst. Librarian B. Newson (?) - not sure what the word is after 'B' but that's what it looks like - and birthplace shown as 'Foreign Parts'. No other family with him.
Best I can do.
Annette