Goleuadau canhwyllau oedd yr unig ffynhonnell goleuni wrth gerdded i fyny'r llwybr coblog.

Candle lights were the only source of illumination as one walked up the cobblestone path.

Mae'r llwybr yn tywys i fyny at driog fawr y meithrinfa drytachau yma yng nghefn gwlad Cymru.

The path led up to the grand edifice of the dragon nursery here in the Welsh countryside.

Roedd yr hydref wedi cwmpasu'r ardd gyda lliwiau gwych - aur, coch, a brown.

Autumn had cloaked the garden with brilliant colors - gold, red, and brown.

Awyrgylch hudolus oedd yma, oedd wedi'i ddehongli'n fwy serth ar noson Calan Gaeaf.

There was a magical atmosphere here, made even more enchanted on All Hallows' Eve.

Mewn un o'r ystafelloedd, roedd Gareth yn llywio drwy'r llyfrgell.

In one of the rooms, Gareth was navigating through the library.

Roedd yn berson tawel, ystyriol, ac yn aml â'i drwyn mewn llyfr.

He was a quiet, thoughtful person, often with his nose in a book.

Roedd ei fwriad yn glir dros noswaith y gystadleuaeth: ennill cystadleuaeth stori Calan Gaeaf a chwmpasu'r gweddillion ei ofnau.

His intention for the night of the competition was clear: to win the Halloween story competition and to conquer the remnants of his fears.

Gallai'r fuddugoliaeth ddenu sylw teulu digon caredig i'w fabwysiadu.

Victory could attract the attention of a kind enough family to adopt him.

Ond roedd Gareth yn ansicr am ei allu i ddifyrru 'r gynulleidfa.

But Gareth was uncertain about his ability to entertain the audience.

Roedd ei hunan-amheuaeth yn gwasgu ar ei ysgwyddau Heepsango.

His self-doubt weighed heavily on his shoulders, Heepsango.

Ond, heddiw, wrth fynd drwy lyfrau'r llyfrgell haddeilad, daeth o hyd i hen lyfr wedi'i gladdu dan lwch.

But today, as he went through the library's rebuilt collection, he came across an old book buried under dust.

Roedd yn gorlifo gyda chwedlau traddodiadol Cymru - penlini yn tarodd.

It overflowed with traditional Welsh tales - his knees trembled.

Darganfod am Ddinas Goll Cantre'r Gwaelod a hanesion am y Tylwyth Teg.

Discovering about the Lost City of Cantre'r Gwaelod and stories about the Tylwyth Teg.

Syniadau'n dechrau llifo.

Ideas began to flow.

Y noson gystadleuaethol, roedd pawb yn barod.

On the night of the competition, everyone was ready.

Gorau Sioeau, Mi mae i'w dalu plant mewn gwisgoedd fel cloc ar y brîn.

Best of Shows, children clad in costumes like clockwork.

Roedd Gareth yn sefyll ar y llwyfan, ei galon yn curo cryf.

Gareth stood on the stage, his heart beating strongly.

Wrth iddo adrodd ei stori, daeth y myth gweladwy yn fyw drwy ei eiriau:

As he narrated his story, the visible myth came alive through his words:

"Unwaith, mewn oes arall, roedd dinas Cantre'r Gwaelod yn blodeuo dan y môr...," aeth ymlaen Gareth, ei leisiau yn cryf a hyderus, yn goleuo ystafell â'i stori.

"Once, in another age, the city of Cantre'r Gwaelod flourished beneath the sea...," Gareth continued, his voice strong and confident, illuminating the room with his story.

Yr hyn sy'n denu oedd ei twist - beth pe bai'r haul yn dal i ddisgleirio drwy'r môr gormesol?

What drew them in was his twist - what if the sun still shone through the oppressive sea?

Roedd yr halltair o bleser yn ymddangos yn glir ar wynebau'r gynulleidfa a'r beirniaid.

The glint of delight appeared clearly on the faces of the audience and judges.

Ar ddiwedd ei hanes, roedd yn wynebu'r eiliad o wirionedd.

At the end of his tale, he faced the moment of truth.

Clapio, o benoedd pawb.

Applause, from everyone.

Roedd un cwpl, sy'n ymweld a oedd wedi bod yn ystyried mabwysiadu, wedi mynegi edmygedd arbennig.

There was a couple, who were visiting and who had been considering adoption, expressed special admiration.

Roedd Gareth wedi ennill.

Gareth had won.

Doedd e ddim yn unig yn ennill cwpan, ond hefyd ennill hyder newydd.

He hadn't just won a trophy; he gained newfound confidence as well.

A rhodd, o lefaru ei stori ei hun, allai arwain ei annwyl at teulu newydd.

And the gift of voicing his own story could lead him to a new family.

Roedd y noson hon wedi newid popeth iddo.

This night had changed everything for him.

Roedd gwyntoedd yr hydref yn cyhoeddi dechrau newydd i Gareth.

The autumn winds announced a new beginning for Gareth.