My g/g/grandfather seems to have changed his name twice between censuses.
 
1891 George Henry Davenport, Cirencester, Registrar
1901 Albert G Bromley, Swindon, House Painter
1911 Victor George Bromley, Swindon, House Decorator

The date/place of birth is consistent, as is the spouse and all the children, although they also become Bromley.  I have found details of death, reverting to original name of G H Davenport.

Due to the change in profession, I am wondering if there was something untoward that led to a name change being necessary.  Would it have been common practice to change a family's name?  I guess at a push Albert to Victor could be poor recording on the census.

Any ideas?  Thanks

Wilts and Gloucestershire Standard 09 December 1893
Short article states he was removed from office as registrar - no reason given

Gloucestershire Chronicle 02 December 1893 also has a notice to the same effect by order of the Chief Clerk at the GRO, Somerset House.

It must have been something bad to be dismissed.