All of these are 1881, since this is all I have access to at the moment.
Slightly out of Censuswhack territory I know, but firmly in the Star Trek zone, there is only one James T Kirk, living in Yorkshire. Hundreds of Tribbles though!
On a related note, there is only one person with the first name of Deforest (Deforest James Rule in Cornwall)
Other Censuswhacks unrelated to all things Trekkie
The mind boggles, but in Bridgnorth (RG11/2630, 76, 13) poor Sarah J Edwards is the only person in the country with the unenviable occupation of Factory Sex. Thos F Allen of London is the country's last remaining Tinplate Worrier
There is the one and only John Menace in Lancashire, or Wincup Calleiege the Rat Poisoner in Suffolk, Harry Spangle in Middlesex, Poyce Edwards in Greenwich, Manuel Ponce in St Pancras. Its probably already been found, but there is Murder McKenzie in Bolton.
What do I get for two Censuswhacks in the same household? In Corfe Mullen (RG11/2093, 115, 10), Henry Pond named one of his sprogs Idea and another Edorea, both of which appear nowhere else that year
Thats all for now.
More later possibly
Glen