[S625] England, death certificate (certified copy) for Mary Nightingale died 11 December 1850; registered 14 December 1850. West Bromwich district,Oldbury Sub-district, County of Worcester; General Register Office, Southport.
[S574] Staffordshire Parish Registers Society. "Rowley Regis Parish Register Part III (Baptism, Burials, Marriages 1772-1812)", printed transcription as PDF, entry for Daniel Nightingale and Mary Smith married 25 Dec 1812
[S660] "England Deaths and Burials 1538-1991 Transcription," database, findmypast (https://findmypast.co.uk: accessed 28 July 2018). Entry forMary Nightingale buried 15 Dec 1850 Rowley Regisl.