- [S87] West Wickham, Cambridgeshire - Transcript of Parish Register, (Cambridgeshire Family History Society, CD-ROM;), baptism of Alvina Hayward of Charles & Sarah otp blacksmith born 6 Jan, 10 Feb 1856 (Reliability: 3).
- [S205] FreeBMD, (www.freebmd.org.uk;), death registration of Alvina Perrins, 85, Biggleswade 3b 722, December quarter 1941 (Reliability: 3).
- [S205] FreeBMD, (www.freebmd.org.uk;), marriages of Charles Hayward and Sarah Simkin share reference Cambridge 14 9, September quarter 1850 (Reliability: 2).
- [S42] Births, Marriages and Deaths - Cambridgeshire Index Project, Cambridgeshire County Council, (http://www.cambridgeshire.gov.uk/sub/register/cambsindex.htm;), marriage of Charles Hayward and Sarah Simkin 1850, Cambridge, 331/CE025/02/378/1 (Reliability: 3).
- [S113] Civil Registration Marriage Indexes, General Register Office, (1837-;), marriages of Edward Perrins and Alvina Hayward share reference Linton 3b 825, September quarter 1877 (Reliability: 3).