This article is about the particular significance of the decade 1780–1789 to Wales and its people.

Events

• 1780
• 1781
• 1782
• 1783
• 1784
• 1785
• 1786
• 1787
• 1788
• 1789

Arts and literature

New books

1780

• John Walters - Poems with Notes

1781

• Thomas Pennant - Tours in Wales, volume 2

1782

• Thomas Pennant - Journey to Snowdon, volume 1

1783

• Julia Ann Hatton - Poems on Miscellaneous Subjects

1784

• Richard Price - Importance of the American Revolution

1785

• Nathaniel Williams - Darllen Dwfr a Meddyginiaeth

1786

• David Samwell - A Narrative of the Death of Captain James Cook
• Hester Lynch Piozzi - Anecdotes of the late Samuel Johnson, Ll.D., during the last twenty years of his life

1788

• Hester Lynch Piozzi - Letters to and from the late Samuel Johnson

1789

• Richard Price - Love for our Country

Music

1781

• John Parry (harpist) - British Harmony, being a Collection of Antient Welsh Airs

1783

• Evan Hughes (Hughes Fawr) - Rhai Hymnau Newyddion o Fawl i'r Oen

1784

• Edward Jones (Bardd y Brenin) - The Musical and Poetical Relicks of the Welsh Bards

1787

• Nathaniel Williams - Ychydig o Hymnau Newyddion

Births

• 1780
  • 10 February - James Henry Cotton, Dean of Bangor (died 1862)
  • 14 May - Sir Thomas Frankland Lewis, politician (died 1855)
  • 7 October - Wyndham Lewis, MP (died 1838)
• 1781
• 1782
  • 20 January - Sir William Nott, military leader (died 1845)
  • 29 December - Sir William Lloyd, soldier and mountaineer (died 1857)
• 1783
  • May - Cadwaladr Jones, minister and literary editor (died 1867)
• 1784
  • 17 January - Joseph Tregelles Price, ironmaster (died 1854)
  • date unknown - Walter Coffin, coal-owner (died 1867)
• 1785
  • December - Richard Jones (Gwyndaf Eryri), poet (died 1848)
  • 24 December - William Bruce Knight, clergyman and scholar (died 1845)
  • date unknown - William Owen, historian (died 1864)
• 1786
• 1787
  • 2 October - Thomas Price (Carnhuanawc), historian (died 1848)
• 1788
  • 12 February - William Williams, MP (died 1865)
  • 3 October - John Montgomery Traherne, antiquary (died 1860)
• 1789
  • 22 April - Richard Roberts, engineer (died 1864)
  • 24 May - Beti Cadwaladr, Crimea nurse (died 1860)

Deaths

• 1780
  • 6 March - Sir John Meredith, lawyer, 65
  • 1 April - Sir Stephen Glynne, 7th Baronet, 35
  • date unknown - Richard Thomas, priest and antiquarian, 46
• 1781
  • 4 April - Henry Thrale, brewer
  • 12 October - David Powell (Dewi Nantbrân), Franciscan friar and author
• 1782
  • 15 May - Richard Wilson, landscape painter, 54
  • November - John Parry, harpist
• 1783
  • 7 August - Thomas Llewellyn, Baptist minister and writer, 63?
  • 6 September - Anna Williams, friend of Dr Johnson, 77?
• 1784
  • 5 April - David Williams, minister and schoolmaster, 74?
• 1785
  • 2 February - John Guest, industrialist, 63
  • 20 October - David Jones of Trefriw, poet, 77?
• 1789
  • 24 July - Sir Watkin Williams-Wynn, 4th Baronet, politician, 39
  • 7 August - William Edwards, minister and bridge-builder, 70
  • 26 November - Elizabeth Baker, diarist, 70?