Thanks for the explanation Ken. I don't have census access at the moment, but will examine the map to try to pinpoint Archer Tce.
On the 1871 census I have a family living at 3 in 2 Court, Fairclough (with a question mark) Lane, West Derby. This sounds like a more depressed area of housing. Are you familiar with a Fairclough Lane, and do you know of any maps which show the Lane or Court?