i. Personal knowledge of Andrea Blacknell.; [Source Record]; Certainty Primary Evidence
ii. Birth Certificates.; Page birth certificate for Ernest Blacknell, born 13 Dec 1910; Wrexham registration district, Ruabon sub-district; [Source Record]; Certainty Unknown ('4')
iii. "Census Returns of England and Wales, 1911." online database.; Page (accessed 23 Aug 2018), entry for Mary Ann Freer household, Dynhynlle Cottage near Ruabon; RD 621, SD 2, ED 6, SN 46; [Source Record]; Certainty Primary Evidence
iv. 1939 Register. RG 101. The National Archives of the UK, London; Page Nottingham, Ernest Blacknell household.; [Source Record]; Certainty Primary Evidence
v. Death Certificates.; Page death certificate for Ernest Blacknell, died 18 Jan 1990; Nottingham registration district; [Source Record]; Certainty Unknown ('4')
vi. Obituraries, Newspapers; Page "Obiturary for Ernest Blacknell, Evening Post," 19 Jan 1990, p. 22, col. 5.; [Source Record]; Certainty Unknown ('4')
vii. District Probate Registry.; Page grant of probate for Ernest Blacknell; [Source Record]; Certainty Unknown ('4')
viii. Death Certificates.; Page death certificate for Doris Blacknell, died 13 Mar 1999; Nottingham registration district; [Source Record]; Certainty Unknown ('4')
ix. Birth Certificates.; Page birth certificate for Doris Harrison, born 6 Oct 1914; Grimsby registration district; [Source Record]; Certainty Unknown ('4')
x. District Probate Registry.; Page grant of probate for Doris Blacknell; [Source Record]; Certainty Unknown ('4')