Thank you everyone,really really helpful,I didnt know there was a Tothill St,Holborn,that is really good,because it would make more sense for Robert to be baptised in Holborn.
The marriage details seem plausible as well,it might be worth looking for their death details.
Thank you for the information regarding the 1841 census,I have tried to find info about the Bown name but this is the first time the name has come up.
Robert Bown Joseph Father i know was fiction because i have checked the trade directories for him because he was a publican.
Any other ideas guys would be great,Thanks all