Jenkyn Beverley Smith, FLSW, FRHistS (27 September 1931 – 19 February 2024), published as J. Beverley Smith, was a Welsh historian of medieval Wales, who was successively Sir John Williams Professor of Welsh History (1986–1995), Research Professor of Welsh History (1995–1999) and Emeritus Professor (1999–2024) at Aberystwyth University.
After completing two years of National Service in 1956, Smith joined the Board of Celtic Studies at the University of Wales as a researcher, before spending two years as the Assistant Keeper of the Department of Manuscripts and Records at the National Library of Wales from 1958 to 1960.
Smith was also co-editor of the Bulletin of the Board of Celtic Studies (1972–96; from 1994, the journal became the Studia Celtica) and served its Chief Editor from 1996 to 2010.
[1] Smith served on a number of public bodies; he was a member of the council of the National Library of Wales from 1974 to 1984, and also served on the Board of Celtic Studies at the University of Wales for 42 years from 1965 (as Chairman from 1985 to 1991).
He was a Commissioner of the Royal Commission on Ancient and Historical Monuments for Wales from 1984 to 1999, the last eight years of which he was its chairman.