Ar ôl pymtheg wythnos, pwy yw pencampwyr 2018 - Ysgol y Preseli neu Ysgol Syr Hugh Owen? After 15 weeks, only one school can win Radio Cymru's annual pop quiz for schools!
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Ar ôl pymtheg wythnos, pwy yw pencampwyr 2018 - Ysgol y Preseli neu Ysgol Syr Hugh Owen? After 15 weeks, only one school can win Radio Cymru's annual pop quiz for schools!
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
