What information does the census hold?
The census is arranged by town, village or hamlet and it will tell you building by building the names of everybody whose slept in a particular household over the night of the census. And it was normally taken, well it was always taken on Sunday night because that was the night when most people were regarded as being at home. It will give you the names of everybody, their ages, and from 1851 onwards, their relationship to the head of the household, their occupations and their birth places, so it can be extremely useful sources.