Elin sy'n darllen y stori hon am antur Steff a'i dad-cu wrth chwilio am drysor. A story for infants about Steff and his grandfather's adventure as they go treasure-hunting.
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Elin sy'n darllen y stori hon am antur Steff a'i dad-cu wrth chwilio am drysor. A story for infants about Steff and his grandfather's adventure as they go treasure-hunting.
Ail wasanaeth BBC Radio Cymru sy'n cynnig sioe frecwast bob bore'r wythnos.
