The National Archive of Memorial Inscriptions and BBC History Magazine have launched a Mysterious Memorials contest to find the "most surprising, enigmatic or bizarre historical gravestone epitaph in Britain."
Contenders so far include one from Eshness in the Shetlands that reads: "Donald Robertson, born 14th January 1785. Died 14th June aged 63. He was a peaceable, quiet man, and to all appearances a sincere Christian. His death was much regretted which was caused by the stupidity of Laurence Tulloch of Clothister (Sullom) who sold him nitre instead of Epsom Salts by which he was killed in the space of five hours after taking a dose of it."
Another from All Saints Church, Darfield, Barnsley, states simply: "The mortal remains of Robert Millthorp who died September 13th 1826 aged 19 years. He lost his life by inadvertently throwing this stone upon himself whilst in the service of James Raywood or Ardsley, who erected it in his memory". [Link]