Dewi Nantbrân (real name David or Dewi Powell; died 1781) was a Welsh Friar Minor. He wrote the "Catechism Byrr o'r Athrawiaeth Ghristnogol" (London, 1764), a short catechism of Christian doctrine in the Welsh language.[1]
Powell, who came from Abergavenny, was described by Meic Stephens as the most notable Catholic writer of his century for his three Welsh-language books.[2]