80 mlynedd ers iddo ennill Oscar, sylw i'r ffilm How Green Was My Valley yng nghwmni Gary Slaymaker. Gary Slaymaker discusses How Green Was My Valley. Show more
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80 mlynedd ers iddo ennill Oscar, sylw i'r ffilm How Green Was My Valley yng nghwmni Gary Slaymaker. Gary Slaymaker discusses How Green Was My Valley. Show more