i. E-mail correspondence with Paul Blacknell. Privately held by Blacknell, Jeff Winter [(E-ADDRESS) FOR PRIVATE USE,] to Paul Blacknell, e-mail<; privately held by Blacknell.; Page 16/6/2011>, "Re: Calverton Blacknall,"; [Source Record]; Certainty Secondary Evidence
ii. Public Record Office, "Census Returns of England and Wales, 1871"; Page RG10 3494 p4; [Source Record]; Certainty Primary Evidence