Hi nevillebunce,
Great to see you here
I have had a search on FreeBMD and found a birth for Joseph Bunce and a marriage:
Birth details:
Births Jun 1842 - BUNCE Joseph Bradfield VI 147 There is a scan of the entry
HERE.Bradfield is in Berkshire.
Marriage details:
Marriages Mar 1866 - Bunce Joseph   Bradfield 2c 438
Surname First name(s)  District Vol PageÂ
Marriages Mar 1866
Which shows a marriage to a Jane Selwood? Joseph around 24 years old.
Bunce Joseph  Bradfield 2c 438 Â
Selwood Jane   Bradfield 2c 438
Image of the marriage details
HERE
Maybe the marriage is nothing to do with Joseph Bunce, but Bradfield was not that big a place!
You could also track down the census for 1851, 1861 as a youngster and the 1871 to check who he is with then!
Hope that helps some.
Please let us know how you get on

All the best,
Dave