Yr Hwntw Mawr
- Selemo: 1983
- Naha: United Kingdom
- Mofuta: Documentary, TV Movie
- Studio: Ffilmiau'r Nant
- Lentsoe la sehlooho:
- Motsamaisi: Alun Ffred Jones
- Sebapali: John Pierce Jones, Lindsay Evans, Elfed Dafis, Alaw Bennet Jones, Eirlys Eckley, Dafydd Clwyd
