Tybed sut wythnos fuodd hi mewn blynyddoedd a fu? Dewch i brocio'r cof gyda John Hardy. John Hardy goes back to the early years. Show more
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Tybed sut wythnos fuodd hi mewn blynyddoedd a fu? Dewch i brocio'r cof gyda John Hardy. John Hardy goes back to the early years. Show more
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
