1800 in Wales

Incumbents

• Lord Lieutenant of Anglesey – Henry Paget
• Lord Lieutenant of Brecknockshire and Monmouthshire – Henry Somerset, 5th Duke of Beaufort
• Lord Lieutenant of Caernarvonshire – Thomas Bulkeley, 7th Viscount Bulkeley
• Lord Lieutenant of Cardiganshire – Wilmot Vaughan, 1st Earl of Lisburne ; Thomas Johnes
• Lord Lieutenant of Carmarthenshire – John Vaughan
• Lord Lieutenant of Denbighshire – Sir Watkin Williams-Wynn, 5th Baronet
• Lord Lieutenant of Flintshire – Robert Grosvenor, 1st Marquess of Westminster
• Lord Lieutenant of Glamorgan – John Stuart, 1st Marquess of Bute
• Lord Lieutenant of Merionethshire - Sir Watkin Williams-Wynn, 5th Baronet
• Lord Lieutenant of Montgomeryshire – George Herbert, 2nd Earl of Powis
• Lord Lieutenant of Pembrokeshire – Richard Philipps, 1st Baron Milford
• Lord Lieutenant of Radnorshire – Thomas Harley
• Bishop of Bangor – John Warren ; William Cleaver
• Bishop of Llandaff – Richard Watson
• Bishop of St Asaph – Lewis Bagot
• Bishop of St Davids – William Stuart ; Lord George Murray

Events

• February - John Bryan begins preaching.
• 5 May - Missionary John Davies sets out for Tahiti.
• 1 August - The Naval Temple on The Kymin at Monmouth is dedicated.
• August - Owen Davies and John Hughes arrive in Ruthin to superintend the Wesleyan Methodist mission to Wales.
• December - The Brecon Canal opens between Brecon and Talybont.
• unknown dates
• *Richard Fothergill goes into partnership with Samuel Homfray at Tredegar. Jeremiah Homfray begins leasing mineral lands at Abernant, Cwmbach, and Rhigos.
• *Edward Charles becomes official "bard" of the Gwyneddigion Society.
• *Thomas Charles introduces the practice of allowing Calvinistic Methodist congregations to elect their own elders.
• *Richard Ellis succeeds his father, Lewis Ellis, as organist of Beaumaris Church.
• *William Jones establishes a grammar school at Wrexham.
• *William Nott joins the Bengal European Regiment in India.

Arts and literature

New books

English language

• William Bingley - Tour round North Wales
• John Evans - A Tour through part of North Wales in... 1798 and at other times
• John Jones - A Development of... Events calculated to restore the Christian Religion to its... Purity
• Thomas Jones - A Cardiganshire Landlord's Advice to his Tenants
• Richard Llwyd - Beaumaris Bay
• William Ouseley - Epitome of the Ancient History of Persia
• Henry Wigstead - ''Remarks on a Tour to North and South Wales: In the Year 1797''

Welsh language

• Timothy Thomas - ''Traethiad am y Wisg-Wen Ddisglair''

Music

• "Suo Gân"

Births

• 4 March - Dr William Price, physician
• 6 March - Samuel Roberts (S.R.), Radical leader
• 22 March - Thomas Bevan, Archdeacon of St David's
• 20 June - Edward Douglas-Pennant, 1st Baron Penrhyn
• 1 August - Elizabeth Randles, musical prodigy
• 1 October - Williams Evans, hymnist
• 30 October - Ernest Vaughan, 4th Earl of Lisburne, landowner and politician
• 29 November - David Griffith (Clwydfardd), poet and archdruid
• date unknown
• *James James (Iago Emlyn), minister and poet
• *David Morris, politician

Deaths

• 6 January
• *William Jones of Neyland, clergyman and author, 73
• *Wilmot Vaughan, 1st Earl of Lisburne, politician, 71
• 27 January - John Warren, Bishop of St David's and later of Bangor
• 14 March - Daines Barrington, antiquary and naturalist, 72
• May - Evan Hughes, clergyman and author, age unknown
• 14 July - Basil Feilding, 6th Earl of Denbigh, 81