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Nid oes modd chwarae darnau sain a fideo ar eich dyfais

Gwobr Goffa David Ellis - Y Rhuban Glas (41) / David Ellis Memorial Prize - the Blue Riband (41)

8 Awst 2015 Diweddarwyd 19:37 BST

Gwobr Goffa David Ellis - Y Rhuban Glas (41) / David Ellis Memorial Prize - the Blue Riband (41)

Ffion Hâf