The Quest for Olwen is a twenty-two-minute animated feature based on Culhwch and Olwen from The Mabinogion. The short film is written by Gwyn Thomas and directed by Valeri Ugarov. It was one of several productions between Welsh production company S4C (Cartwn Cymru) and Russian production company Christmas Films. The short film won the 1991 - Annecy IFF (France) prize for the best television film..