John Wheldon (1807–92)
Scientific bookseller with premises at 4 Paternoster Row and 58 Great Queen Street, Lincolns Inn Fields, London.
BMD (Death index)
Census returns of England and Wales 1871 (The National Archives: Public Record Office RG10/458/15/24)
England & Wales, national probate calendar (index of wills and administrations), 1858–1966 (Ancestry.com, accessed 27 February 2014)
Post Office London directory 1869