i. "Census Returns of England and Wales, 1881." online database.; Page (accessed 26 Apr 2020), entry for Susan Cottingham household, Grimsby, Lincolnshire; [Source Record]; Certainty Primary Evidence
ii. "Census Returns of England and Wales, 1881." online database.; Page (accessed 26 Apr 2020), entry for Sarah Cottingham household, Grimsby, Lincolnshire; [Source Record]; Certainty Primary Evidence