Pwy oedd y Brenin Arthur go iawn, a pham y mae cynifer o lefydd yn ei hawlio? Who was the real King Arthur, and why do so many places lay claim to the legend? Show more
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Pwy oedd y Brenin Arthur go iawn, a pham y mae cynifer o lefydd yn ei hawlio? Who was the real King Arthur, and why do so many places lay claim to the legend? Show more
Ail wasanaeth BBC Radio Cymru sy'n cynnig sioe frecwast bob bore'r wythnos.
