Owain a'r mynydd /
Doyle, Malachy.
Greenfield, Giles.
Myrddin ap Dafydd
Llwyndyrys : Gwasg Carreg Gwalch,
2001.
Argraffiad Saesneg gwreiddiol = Original English edition: London : Bloomsbury Publishing Plc., 2000.
Grandparent and child