1773 in Wales

Incumbents

• Lord Lieutenant of Anglesey - Sir Nicholas Bayly, 2nd Baronet
• Lord Lieutenant of Brecknockshire and Monmouthshire – Charles Morgan of Dderw
• Lord Lieutenant of Caernarvonshire - Thomas Wynn
• Lord Lieutenant of Cardiganshire – Wilmot Vaughan, 1st Earl of Lisburne
• Lord Lieutenant of Carmarthenshire – George Rice
• Lord Lieutenant of Denbighshire - Richard Myddelton
• Lord Lieutenant of Flintshire - Sir Roger Mostyn, 5th Baronet
• Lord Lieutenant of Glamorgan – John Stuart, Lord Mountstuart
• Lord Lieutenant of Merionethshire - William Vaughan
• Lord Lieutenant of Montgomeryshire – Robert Clive
• Lord Lieutenant of Pembrokeshire – Sir William Owen, 4th Baronet
• Lord Lieutenant of Radnorshire – Edward Harley, 4th Earl of Oxford and Earl Mortimer
• Bishop of Bangor – John Ewer
• Bishop of Llandaff – Shute Barrington
• Bishop of St Asaph – Jonathan Shipley
• Bishop of St Davids – Charles Moss

Events

• 22 April - An earthquake occurs in the Caernarfon area, with an estimated strength of 3.7.
• 7 November - Richard Morris makes his will.
• 25 November - Walter Siddons marries Sarah Kemble.
• date unknown
• *Dolauhirion Bridge is built on the Llandovery to Cilycwm road by William Edwards.
• *David Williams, having resigned from the ministry, opens a school in Chelsea.

Arts and literature

New books

• Evan Evans - Rhybudd Cyfr-drist i'r Diofal a Difraw
• John Roberts (Siôn Robert Lewis) - ''Geirlyfr Ysgrythurol''

Music

• James Rivington settles in New York, where he begins selling musical instruments, including "Welsh harps".

Births

• 21 February - Titus Lewis, preacher and writer
• 21 April - Christopher Bethell, English clergyman, Bishop of Bangor 1830-1859
• 14 November - Stapleton Stapleton-Cotton, 1st Viscount Combermere, military leader
• date unknown
• *Catherine Davies, royal governess and memoirist
• *Joseph Harris (Gomer), writer

Deaths

• 16 February - Sir John Wynn, 2nd Baronet, 71
• 21 July - Howell Harris, Methodist leader, 59