Gwobr Goffa Osborne Roberts (49) / Osborne Roberts Prize (49)
Nid oes modd chwarae darnau sain a fideo ar eich dyfais

Gwobr Goffa Osborne Roberts (49) / Osborne Roberts Prize (49)

10 Awst 2017 Diweddarwyd 18:36 BST

Gwobr Goffa Osborne Roberts (49) / Osborne Roberts Prize (49)

John Ieuan Jones