i. Lee Drew's Family History.; Page Lee Drew, "History of James and Emily Blacknell Hoggard," 5/12/2009 (http://www.lineagekeeper.com/2009/12/history-of-james-and-emily-blacknell.html).; [Source Record]; Certainty Questionable
ii. International Genealogical Index; Page Search results; [Source Record]; Certainty Questionable
iii. "Christening register for the parish of Calverton in Nottinghamshire covering 1744-1901," transciption database, Society of Genealogists; Page accessed 14 Jan 2020), Entry for George Blacknall.; [Source Record]; Certainty Primary Evidence
iv. "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
v. "Christening register for the parish of Calverton in Nottinghamshire covering 1744-1901," transciption database, Society of Genealogists; Page accessed 14 Jan 2020), Entry for Mary Blacknall.; [Source Record]; Certainty Primary Evidence
vi. "Christening register for the parish of Calverton in Nottinghamshire covering 1744-1901," transciption database, Society of Genealogists; Page accessed 14 Jan 2020), Entry for Elizabeth Hoggard.; [Source Record]; Certainty Primary Evidence