Roedd marchnad Prydferth Caerdydd yn llawn bywyd ar noson hydrefol.

The Prydferth Market in Caerdydd was full of life on an autumnal evening.

Cyffro'r noson Calan Gaeaf yn yr awyr, gyda'r cyfle i wylio'r rysáit o dan y rhewgell a churwen messieus.

The excitement of Halloween night was in the air, with the chance to watch the recipe beneath the freezer and "curwen messieus."

Dywedd glaw man heddiw, ond roedd pawb yn edrych ymlaen at ddathliadau Noson Guto Ffowc.

There was light rain today, but everyone was looking forward to the Noson Guto Ffowc celebrations.

Roedd y stân yn llawn cynnyrch yr hydref, nwyddau amrywiol, a chynigion poeth cynnes.

The stalls were filled with autumn produce, a variety of goods, and warm hot deals.

Ymhlith y torfeydd oedd Emrys, bachgen chwilfrydig gyda dychymyg eang.

Among the crowds was Emrys, a curious boy with a broad imagination.

Gwelodd fel arfer yr hen gerddor gyda'i delyn gerferydd.

He usually saw the old musician with his harp nearby.

Ond heddiw, roedd y delyn gerferydd ar goll.

But today, the harp was missing.

Heb allu gwrando ar gerddoriaeth swynol y gerddor, roedd Emrys yn teimlo'r hollt defnyddiol yn ei galon.

Unable to listen to the enchanting music, Emrys felt a useful gap in his heart.

Roedd ei chwaer Carys wrth ei ochr.

His sister Carys was by his side.

Roedd hi'n fwy na pharod i fynd ar drywydd y dirgelwch.

She was more than ready to pursue the mystery.

Roedd hi'n gwybod pa mor bwysig oedd y delyn gerferydd i'r gerddor a mor bwysig oedd hi i Emrys hefyd.

She knew how important the harp was to the musician and how important it was to Emrys too.

"Awn i ddechrau chwilio?

"Shall we start looking?"

" gofynnodd Emrys, ei lygaid yn disgleirio gyda dyhead.

Emrys asked, his eyes shining with eagerness.

"Byddai hynny'n syniad da," atebodd Carys.

"That would be a good idea," replied Carys.

"Ond byddwn rhaid i ni fod yn ofalus.

"But we'll have to be careful."

"Roedd marchnad Ymlaen gyda thechnoleg, sefyllfaoedd lliwgar, a phersonol fel Emrys a Carys.

The market was advanced with technology, colorful settings, and individuals like Emrys and Carys.

Rhwng y stalleoedd, gwelodd Emrys ddyn amheus, yn cuddio rhywbeth dan ei gôt mawr.

Among the stalls, Emrys saw a suspicious man, hiding something under his large coat.

Teimlodd Emrys yn gynnil ac roedd yn awyddus i ddilyn y dyn.

Emrys felt cautious and was eager to follow the man.

"Emrys, efallai dylwn ni holi pobl gyntaf," awgrymodd Carys.

"Emrys, maybe we should ask people first," suggested Carys.

Ond roedd Emrys yn benderfynol.

But Emrys was determined.

Aethant ymlaen, gan gadw llygad barcud ar y dyn.

They moved on, keeping a sharp eye on the man.

Sbarduno ddaeth y dyn i stop yn eglur, a gwnaeth tro sydyn.

Suddenly, the man stopped abruptly and made a sharp turn.

Wrth i Emrys a Carys fynd ar ei ôl, clywodd Carys sŵn rhyfedd.

As Emrys and Carys followed, Carys heard a strange noise.

"Edrych, Emrys!

"Look, Emrys!"

" gwaeddodd Carys, a dalodd dewyn drwsio fn.

shouted Carys, catching sight of a harp being fixed.

Dyma maen nhw'n darganfod gwisgo'r teulu gerferydd mewn lle anghyffredin eisoes.

That's when they discovered the harp in an unexpected place.

"Rho ef yn ôl," gwaeddodd Carys yn wyneb y dyn amheus.

"Give it back," shouted Carys at the suspicious man.

Rhwng cydnerth y brawd a'r chwaer a oedd ymddangos ar frys, laniodd y dyn ac i erlynia oedd angen i ffwrdd.

With the combined strength of the brother and sister and the presence of authorities arriving swiftly, the man fled, and the necessary recovery was made.

Pan oedd yr hen gerddor yn derbyn ei delyn ôl, diolchodd e'n fawr.

When the old musician received his harp back, he thanked them greatly.

Roedd gwyneb Emrys yn berwir o lawenydd wrth iddo estyn ei llaw tua'r gerddor.

Emrys's face beamed with joy as he extended his hand towards the musician.

Oedd yn gwerthfawrogi o fewn amser ar gyfer y perfformiad.

It was appreciated just in time for the performance.

Wrth i'r tân gwyllt ffrio ac achosi llwyddiant i'r awyr hydrefol, teimlai Emrys fwy o hyder, ac adgofion o bondio newydd gyda'i chwaer.

As the fireworks sizzled and filled the autumn sky with success, Emrys felt more confident, and memories of new bonding with his sister lingered.

Roedd Carys yn gwerthfawrogi dyfeisgarwch Emrys, a chyda'i gilydd, roeddent yn mwynhau'r dathlu a'r llwyddiant i arbed y noson.

Carys appreciated Emrys's resourcefulness, and together, they enjoyed the celebration and the success of saving the night.

roedd yn noson Nadolig i'w gofio.

It was a Christmas night to remember.