Career
He wrote a manifesto, A Dissertation on the Welsh Language (1770), in which he praised the Welsh language. He was a noted lexicographer, publishing An English–Welsh Dictionary in fifteen parts (1770 to 1794).
He wrote a manifesto, A Dissertation on the Welsh Language (1770), in which he praised the Welsh language. He was a noted lexicographer, publishing An English–Welsh Dictionary in fifteen parts (1770 to 1794).