1. (Research):1841 census was 6 Jun 1841 and Mary was 5 months (her birth date was therefore between 7 Dec 1840 and 5 Jan 1841); [Note Record]
i. Quorndon, Census Index, 1851, http://www.quornmuseum.com; Page p12; [Source Record]; Certainty Secondary Evidence
ii. "Census Returns of England and Wales, 1851." online database.; Page entry for John Freer household, Quorndon, Leicestershire; [Source Record]; Certainty Primary Evidence