Death by Wine Vat 

strange deaths burial Gloucestershire
On the 31st of October 1479, the Duke of Clarence, who was the younger brother of Edward IV, was buried at Tewkesbury Abbey. He was said to have met a unfortunate end by drowning in a vat of Malmsey wine when he was 28.
If you look further into his death, the Duke of Clarence was said to have been a paranoid alcoholic, who was said to have been a participant in a plot against the king. He  was privately executed at the Tower of London for treason. He was said to have to asked to be killed by drowning in a vat of his favourite tipple but this has never been verified.