1787 in Wales

Centuries:	16th; 17th; 18th; 19th; 20th;
Decades:	1760s; 1770s; 1780s; 1790s; 1800s;
See also:	List of years in Wales; 1787 in Great Britain Ireland Scotland

This article is about the particular significance of the year 1787 to Wales and its people.

Incumbent[]

March - Hester Piozzi returns from Italy with her second husband.
November - Richard Crawshay uses puddling at the .^[1]
December - Evan Evans (Ieuan Fardd), shortly before his death, sells his manuscript collection.
date unknown
- Thomas Charles opens his first Sunday school, at Hengoed.^[2]
- The first Cymmrodorion Society is disbanded.^[3]
- Iolo Morganwg spends time as a prisoner in Cardiff jail.^[4]
- Construction of Margam orangery begins.^[5]

^ Charles K. Hyde (12 March 2019). Technological Change and the British Iron Industry, 1700-1870. Princeton University Press. p. 91. ISBN 978-0-691-65634-2.
^ James Comper GRAY (1871). Sunday School World: an encyclopædia of facts ... on Sunday-School Matters. Edited by J. C. G. p. 11.
^ Emrys Jones; Honourable Society of Cymmrodorion (London, England) (21 September 2001). The Welsh in London, 1500-2000. University of Wales Press on behalf of the Honourable Society of Cymmrodorion. p. 94. ISBN 978-0-7083-1697-9.
^ Unitarian Historical Society, London (1959). Transactions. p. 99.
^ Royal Commission on the Ancient and Historical Monuments in Wales (1976). An Inventory of the Ancient Monuments in Glamorgan. RCAHMW. p. 323. ISBN 978-0-11-700754-3.
^ Multiple Contributors (21 April 2018). Regulations of the Society of Royal British Bowmen. Established, February 27th. 1787. Creative Media Partners, LLC. ISBN 978-1-385-06773-4.
^ DICTIONARY OF NATIONAL BIOGRAPHY. 1896.
^ Williams, Griffith John. "Philip David". Dictionary of Welsh Biography. National Library of Wales. Retrieved 13 December 2016.
^ Lewis Namier; John Brooke (1985). The House of Commons 1754-1790. Boydell & Brewer. pp. 165–. ISBN 978-0-436-30420-0.
^ "John Egerton", Dictionary of National Biography (1885-1900), Volume 17
^ The Royal Kalendar, Or, Complete and Correct Annual Register for England, Scotland, Ireland, and America, for the Year ... J. Debrett. 1817. p. 3.