one of Wales's leading scholars of the late Renaissance. He wrote a Welsh grammar and dictionary. He was also a translator and editor and an ordained minister of the Church of England. He is believed to have been the main editor and reviser of the 1620 edition of the Welsh translation of the Bible and the 1621 edition of the Welsh translation of the Book of Common Prayer. He published a Welsh grammar in Latin in 1621, Antiquae linguae Britannicae, and a Welsh-Latin Latin-Welsh dictionary in 1632, Dictionarum duplex. In 1632 he also published Llyfr y resolusion, a masterly translation and Protestant adaptation of The first booke of the Christian exercise, appertayning to resolution (1582) by English Roman Catholic Robert Parsons.
