Hello Paul, yes there are an awful lot of those Pheasants......I am trying to get a grip on the ones emanating from Bedford, but there are definitely other family groupings in other counties such as Derby etc. I don't know anything about those groups myself.
There is a lady in NZ who is, or was, doing a one name study of Pheasants. I could ask my aunt for a contact address if you want.
Have you tried
www.familysearch.com to search for particular births,marriages or groups of siblings from known parents?
If you can find any other descendants it is helpful as they often have another piece of the puzzle or other clues to help you narrow down the search a bit.
The 1881 census is helpful too .
One of my favourite sites has been FreeBMD where you can look up all sorts of info. The list of Pheasants gets longer each time they update it, but it isn't as bad as say, the Smiths must be. Anyway have fun !