Hywel Dda (hŭ´wəl ŧħä), or Howel the Good, d. 950?, king of Wales. He brought much of Wales under a single rule and is credited with the codification of Welsh laws. The earliest extant texts of the Laws of Hywel Dda date from the 13th cent. and provide evidence of a developing code of law; they are valuable sources for social and legal history.
"Hywel Dda." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (March 24, 2018). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/hywel-dda
"Hywel Dda." The Columbia Encyclopedia, 6th ed.. . Retrieved March 24, 2018 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/hywel-dda