'Unknown' means that events cannot be definitively placed.
30 Mar 1851; Census; Tanfield, Durham, Durham Co, England
Henry Pickering, Head, Widr, 62, Annuitant, Stanhope Eleanor Pickering, Daur, U, 30, Tanfield 7 Apr 1861; Census; Tanfield, Durham, Durham Co, England
Henry Pickering, Head, Mar, 72, Annuitant (formerly game keeper), Stanhope one servant
11 October 2009 Dick Glover, Cambridge, England.