Ysgolion Tryfan a Syr Hugh Owen sy'n agor rownd yr wyth olaf! Tryfan and Syr Hugh Owen open the quarter-finals of Radio Cymru's annual pop quiz for schools!
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Ysgolion Tryfan a Syr Hugh Owen sy'n agor rownd yr wyth olaf! Tryfan and Syr Hugh Owen open the quarter-finals of Radio Cymru's annual pop quiz for schools!
Ail wasanaeth BBC Radio Cymru sy'n cynnig sioe frecwast bob bore'r wythnos.
