1805 in Wales

This article is about the particular significance of the year 1805 to Wales and its people.

Incumbents

 * Lord Lieutenant of Anglesey – Henry Paget
 * Lord Lieutenant of Brecknockshire and Monmouthshire – Henry Somerset, 6th Duke of Beaufort
 * Lord Lieutenant of Caernarvonshire – Thomas Bulkeley, 7th Viscount Bulkeley
 * Lord Lieutenant of Cardiganshire – Thomas Johnes
 * Lord Lieutenant of Carmarthenshire – John Vaughan (until 19 January); George Rice, 3rd Baron Dynevor (from 21 April)
 * 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 – Edward Clive, 1st Earl of Powis
 * Lord Lieutenant of Pembrokeshire – Richard Philipps, 1st Baron Milford
 * Lord Lieutenant of Radnorshire – George Rodney, 3rd Baron Rodney


 * Bishop of Bangor – William Cleaver
 * Bishop of Llandaff – Richard Watson
 * Bishop of St Asaph – Samuel Horsley
 * Bishop of St Davids – Thomas Burgess

Events

 * 21 October - Battle of Trafalgar: A British Royal Navy fleet led by Admiral Horatio Nelson defeats a combined French and Spanish fleet off the coast of Spain. About 465 of the 18,000 men on the British ships were born in Wales.
 * 26 November - The Ellesmere Canal's Pontcysyllte Aqueduct is opened, the tallest and longest in Britain, completing the canal's Llangollen branch.
 * unknown dates
 * John Kenrick III develops his great-uncle's chandlery at Wrexham into a bank.
 * Alban Thomas Jones-Gwynne builds the town of Aberaeron.

New books

 * Thomas Charles - Geiriadur Ysgrythyrol
 * Theophilus Jones - History of the County of Brecknock, vol. 1
 * Titus Lewis - A Welsh — English Dictionary, Geiriadur Cymraeg a Saesneg
 * Robert Southey - Madoc

Music

 * Edward Jones (Bardd y Brenin) takes up residence in St James's Palace.

Visual arts

 * English watercolour landscape painter David Cox makes his first tour in Wales.

Births

 * 13 December - Robert Griffiths, inventor (died 1883)
 * 19 December - John David Edwards, hymn-writer (died 1885)
 * date unknown
 * Evan Davies, missionary (died 1864)
 * Hugh Hughes (Tegai), writer (died 1864)
 * John William Thomas, mathematician (died 1840)

Deaths

 * 15 April - Mary Morgan, servant, 16 (executed by hanging, for killing her newborn child)
 * August - Ann Griffiths, poet and hymn-writer, 29
 * 25 November - Jonathan Hughes, poet, 84