Incumbents

• Prince of Wales - vacant
• Princess of Wales - vacant

Events

• April 28 - In the UK general election:
• Robert Fulke Greville is defeated in Pembrokeshire by Sir John Owen of Orielton.
• Edward Lloyd-Mostyn, 2nd Baron Mostyn becomes MP for Flintshire.
• John Jones of Ystrad is injured in rioting during the election at Carmarthen
• June 3 - Merthyr Riots.
• August 17 - The Rothsay Castle is wrecked in Conwy Bay, with the loss of 93 lives.
• August - John Jones of Ystrad holds the constituency of Carmarthen.
• October 22 - John Jones of Ystrad and Robert Fulke Greville fight a duel at Tafarnspite.
• William Rees (Gwilym Hiraethog) becomes a minister.
• Repeal of the slate tax.

Arts and literature

New books

• John Evans (I. D. Ffraid) - Hanes yr Iddewon

Music

Births

• January 13 - William Hugh Evans, minister and author (d. 1909)
• May 3 - Sir Walter Vaughan Morgan, Lord Mayor of London (d. 1916)
• May 16 - David E. Hughes, musician and professor of music (d. 1900)
• October 16 - John Jones (Eos Bradwen), composer (d. 1899)
• December 8 - William Dykins, poet (d. 1872)
• December 14 - Griffith John, missionary (d. 1912)
• December 20 - William T. Davies, Governor of Pennsylvania (d. 1912)
• date unknown - William Davies (Gwilym Teilo), writer (d. 1892)

Deaths

• January 7 - Edward "Celtic" Davies, author, 74
• June 8 - Sarah Siddons, actress, 75
• August 11 - Cradock Glascott, Evangelical clergyman and associate of the Wesley brothers, 88
• August 13 - Dic Penderyn, labourer, 23 (executed)