This article is about the particular significance of the decade 1720–1729 to Wales and its people.
1720
1721
1722
1723
1724
- A charity school is built at Caerleon-on-Usk as the result of a bequest from Charles Williams.
1725
1726
1727
- The Piercefield estate is sold for £3,366, 5.6d to Thomas Rous of Wotton-under-Edge.
1728
1729
Arts and literature
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1721
- Ellis Pugh - Annerch ir Cymru (first Welsh book published in America)
1723
1724
1725
- Dafydd Lewys - Golwg ar y Byd
1729
1720
1722
1723
1724
1725
1726
1720
1721
1722
1723
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
1729