Dafydd y Garreg Wen is on Robin Huw Bowen's "Hen Aelwyd / Old Hearth", Sain SCD2232 (track 5 along with Ysgubor y Barwn / The Baron's Barn), 5:03. It's also on Elinor Bennett: Telynau a Chan / Folk Songs and Harps, Sain SCD4041, 4:25. Is that what you wanted?sian