1. (Research):Likely to have been born between 1/1/1788 and 3/4/1788. Death certificate age and 1871 census age 84 in both cases 1851 census records Elizabeth's age as 53 (1797-98); [Note Record]
i. "Census Returns of England and Wales, 1841." online database.; Page (accessed 14 Jan 2020), entry for Joseph Blacknall household, Calverton, Nottinghamshire; [Source Record]; Certainty Primary Evidence
ii. Public Record Office, "Census Returns of England and Wales, 1871"; Page RG10 3493 p25; [Source Record]; Certainty Primary Evidence
iii. Death Certificates.; Page death certificate for Elizabeth Blacknell, died 31 Dec 1871; Basford registration district, Arnold sub-district; [Source Record]; Certainty Unknown ('4')