Catrin Beard sy'n chwilio am y cystadleuydd mwyaf gwybodus mewn cwis di-lol. Catrin Beard searches for the most knowledgeable contestant in a no-nonsense quiz. Show more
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Catrin Beard sy'n chwilio am y cystadleuydd mwyaf gwybodus mewn cwis di-lol. Catrin Beard searches for the most knowledgeable contestant in a no-nonsense quiz. Show more
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
