Ancient Laws and Institutes of Wales; Comprising Laws Supposed to be Enacted by Howel the Good, ... with Indexes and Glossary
1841
https://ia801202.us.archive.org/29/items/bub_gb_4_qi_6p1ZucC/bub_gb_4_qi_6p1ZucC.pdf
Mentioned in Big Judah's video below in the book The Old Straight Track
Posting this in case additional information can be found within these pages.
Much love and respect one and all.
Shalom