- [S105] 1881 Census Returns of England and Wales, General Register Office, (3 April 1881;), RG 11., RG 11/1672 f.113 p.18 (Reliability: 3).
Whitens Mere, Castle Camps
Charles Leonard, Head, Mar, 49, Stockman (Ag Lab), Cambs, Castle Camps
Emma Leonard, Wife, Mar, 31, Cambs, Castle Camps
Frederic Leonard, 9, Scholar, Cambs, Castle Camps
Julia Leonard, Daur, 7, Scholar, Cambs, Castle Camps
Charlie Leonard, 5, Cambs, Castle Camps
Martha Leonard, 3, Cambs, Castle Camps
Alfred Leonard, 1, Cambs, Castle Camps
- [S56] Castle Camps, Cambridgeshire - Transcript of Parish Register, 1563-1950, (Cambridgeshire Family History Society, CD-ROM, 2004;), baptism of Henry Charles Leonard, of Charles & Emma of Castle Camps lab, born 3 Apr 1876, 28 May 1876 (Reliability: 3).
- [S100] A Special Corner of England Website, focusing on Castle Camps, Shudy Camps, Bartlow, Horseheath and West Wickham in Cambridgeshire, Marlene Williamson, (http://www.rd29.net/cc/;), marriage of Charles Leonard, lab widr CC son of William shoemaker, and Emma Mynott, sp/ua CC, daughter of John lab, witnessed by Susan & William Leonard (Reliability: 2).