20 mlynedd ers cyhoeddi llyfr cyntaf cyfres Harry Potter, Bethan Sleep sy'n hel atgofion. Bethan Sleep joins Aled to mark 20 years since the first Harry Potter book was published. Show more
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20 mlynedd ers cyhoeddi llyfr cyntaf cyfres Harry Potter, Bethan Sleep sy'n hel atgofion. Bethan Sleep joins Aled to mark 20 years since the first Harry Potter book was published. Show more
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
