This article is about the particular significance of the year 1856
and its people
- February 6 - The sailing ship Grand Duke is wrecked off St Govan's Head, with the loss of 29 lives.
- March 10 - John Jones (Shoni Sguborfawr) is sentenced to three months hard labour for drunkenness.
- May - John Frost is given an unconditional pardon for his role in the Newport Chartist demonstrations of 1839.
- July 3 - 11 men are killed in a mining accident at Coalbrookdale, Nantyglo.
- July 15 - 114 men are killed in a mining accident at New Cymmer Pit, Porth, Rhondda.
- Troops are sent into Talargoch in Flintshire to deal with an industrial dispute involving lead miners.
- Richard Cory sells his provision business, and begins to trade as "Richard Cory and Sons", in the coal and shipping business.
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