1720s in Wales
| 1710s | 1730s | Other years in Wales | 
| Other events of the decade | 
This article is about the particular significance of the decade 1720–1729 to Wales and its people.
Events
1720
- Charles Hanbury Williams succeeds to the estate of his godfather, and takes the surname Williams.
 
1721
- December 30 - Bridget Vaughan marries Arthur Bevan, a barrister.
 
1722
1723
1724
- A charity school is built at Caerleon-on-Usk as the result of a bequest from Charles Williams.
 
1725
- 4 May - Ann Thomas (the "Maid of Cefn Ydfa") marries Anthony Maddocks.
 - Silvanus Bevan is elected a Fellow of the Royal Society on the recommendation of Sir Isaac Newton.
 
1726
- 26 July - Prince Frederick, son of the Prince of Wales, is created Baron Snowdon by his grandfather, King George I of Great Britain.
 
1727
- The Piercefield estate is sold for £3,366, 5.6d to Thomas Rous of Wotton-under-Edge.
 
1728
1729
- 8 January - Prince Frederick, son of King George II, is created Prince of Wales, nearly two years after his father's accession.
 - 1 March - A St. David's Society is established by Welsh immigrants in Philadelphia.
 - 19 October - John Harris becomes Bishop of Llandaff.
 - Zachariah Williams is admitted as a poor brother pensioner of the Charterhouse in London.
 
Arts and literature
New books
1721
- Ellis Pugh - Annerch ir Cymru (first Welsh book published in America)
 
1723
- Henry Rowlands - Mona Antiqua Restaurata
 - Christmas Samuel - Llun Agrippa
 
1724
- Owen Wynne - The Life of Sir Leoline Jenkins
 
1725
- Dafydd Lewys - Golwg ar y Byd
 
1729
- Christmas Samuel - Golwg ar y Testament Newydd
 
Music
Births
1720
- July 22 - Sir Herbert Lloyd, 1st Baronet, politician (d. 1769)
 
1722
- May 9 - Morgan Edwards, Baptist historian (d. 1795)
 
1723
- February 23 - Richard Price, philosopher (d. 1791)
 - March 5 - Princess Mary of Wales, daughter of the Prince and Princess of Wales (d. 1772)
 
1724
- April - Joshua Eddowes, printer and bookseller (d. 1811)
 - December 4 - Princess Louise of Wales, daughter of the Prince and Princess of Wales (d. 1751)
 
1725
- May - Llewellin Penrose, painter
 - September 7 - Francis Homfray, industrialist (d. 1798)
 
1726
- June 14 - Thomas Pennant, traveller and writer (d. 1798)
 - William Jones, poet, antiquary and radical (d. 1795)
 
Deaths
1720
- March 7 - John Morgan (of Rhiwpera), politician, 49
 - April/May - Robert Wynne, clergyman and poet
 - August 29 - Charles Williams, merchant, 87
 - December 31 - John Wynne, industrialist
 
1721
- July 8 - Elihu Yale, benefactor of Yale University, 72
 - date unknown - Sir William Glynne, 2nd Baronet
 
1722
- February 10 - Bartholomew Roberts, pirate ("Black Bart"), 39 (in battle)
 - November 16 - John Vaughan, reformer, 59
 
1723
- December 28 - Sir Charles Lloyd, 1st Baronet, of Milfield, politician, 61
 
1724
- March 22 - John Evans, Bishop of Bangor and Meath, 73?
 - June 1 - Erasmus Saunders, clergyman, 54?
 - date unknown - Richard Bulkeley, 4th Viscount Bulkeley
 
1725
- December 15 - Francis Edwardes, politician
 
1729
- April 29 - Sir Stephen Glynne, 3rd Baronet, 64
 - September - Sir Stephen Glynne, 4th Baronet, 35?
 - September 1 - Sir Richard Steele, satirist, 57