The marriage information was FreeBMD (links included to each name).
The birth and death information is from the GRO - one link to the search page as the results are session related and cannot be linked to. (The GRO requires a login, but is free to use unless you wish to actually buy certificates.)
Of potential interest is that a 15-year-old Esther Wallwork died earlier the same year as Esther Sharples Wallwork, also registered at Barton. Have to wonder if she's not related (sister, maybe) to William.
Census info used for names etc was from ancestry library (so I can't include a sharing link to the images).
If you need more help, just let us know.