Dafydd Elis Elis-Thomas, Baron Elis-Thomas, PC was a Welsh politician who served as the leader of Plaid Cymru from 1984 to 1991 and represented the Dwyfor Meirionnydd constituency in the Senedd from 1999 to 2021. From Wikipedia
The influential Welsh politician and 'founding father' of the Senedd passed away peacefully after a short illness.