Hi there,
For a display to commemorate the Great War, I am researching the boys and men who fell in WW1 and are on the Hathern War memorial, one of whom is the Richard Everard Warren you mentioned being married to Ann Peberdy. I have seen the census records you mention but have yet to locate his war records - maybe you have come across something ? Anyway you may be interested to look at the hathernhistory.co.uk site which I am in process of developing which already contains census, births, marriages and deaths, and Peberdy is quite a commonly occurring name.
Regards,
Anthony