Catrin Collier is a prolific Welsh novelist known for her many historical works. The first in her "Hearts of Gold" series set in her hometown of Pontypridd was adapted by BBC Worldwide as a film in 2003. The Tanabi film of one of her Katherine John crime novels, "By Any Name" is on Amazon Prime. Presently working on the last of 4 books on the life of Owain Glyndwr. Further information available on her website.