Roedd Gareth yn sefyll yn ymyl carreg fawr yn y Brecon Beacons.

Gareth was standing next to a large stone in the Brecon Beacons.

Roedd yr awyrgylch yn llawn arogl dail sychion, a'r gwynt yn symud trwy'r coed fel cân hud.

The atmosphere was filled with the scent of dry leaves, and the wind moved through the trees like a magical song.

Roedd y mynyddoedd yn eu harddwch yn ymestyn dros y moelni, a rhoddai'r darlun ysblennydd gyfle i Gareth ddangos wrth ei fyfyrwyr harddwch hanes Cymru.

The mountains, in their beauty, stretched across the barren land, and the splendid picture provided Gareth the opportunity to show his students the beauty of Wales's history.

"Mae yna lawer i'w ddysgu yma," meddai Gareth yn frwdfrydig wrth y grŵp bach o blant.

"There's a lot to learn here," said Gareth enthusiastically to the small group of children.

Crëodd hanes ei famgu, a llawer o hanesion eraill, ddelwedd yn ei feddwl.

His grandmother's history, along with many other tales, painted an image in his mind.

"Dyma le lle roedd sawl digwyddiad hynod wedi digwydd.

"This is a place where many remarkable events have happened."

"Ond roedd Eira, oedd yn edrych yn ddiog ac yn syllu ar ei ffon drwy'r amser, yn anwybyddu'i ymroddiad.

But Eira, who looked bored and was staring at her phone all the time, ignored his dedication.

Roedd golwg o ddiflastod ar ei hwyneb, a ni chafodd Gareth ond ysgafn siom ohoni.

There was an expression of boredom on her face, and Gareth felt only mild disappointment in her.

Roedd am iddi deimlo nerth hanes.

He wanted her to feel the power of history.

Roedd rhywbeth yn y Beacons yma a allai newid ei barn, os byddai'n gwrando.

There was something in these Beacons that could change her mind, if she listened.

Wrth i'r niwl trwchus ymgasglu dros y tir, roedd llawer o'r myfyrwyr yn dechrau teimlo yn nerfus.

As the thick mist gathered over the land, many of the students began to feel nervous.

Penderfynodd Gareth gymryd grŵp bach, sy'n cynnwys Eira, i gadnoddau cuddiedig ar y safle.

Gareth decided to take a small group, including Eira, to hidden hollows on the site.

Roedd yn bwriadu rhannu stori arbennig am gysylltiad personol ag un o'r hanesion hynaf.

He intended to share a special story about a personal connection to one of the oldest tales.

"Dewch, mae'n rhaid i chi weld hwn," aeth ymlaen, gan annog Eira i sefyll wrth ei ochr.

"Come on, you have to see this," he went on, encouraging Eira to stand by his side.

Gyda phob cam, roedd mwy i'w ddarganfod.

With every step, there was more to discover.

O dan glymu cwrlid o blanhigion y gellid gweld clwydi hen eu dydd, weddillion cartrefi ei hynafiaid.

Under a carpet of plants, one could see relics of old gates and the remnants of his ancestors' homes.

Roedd Gareth wedi dysgu o dair siwrnai ac mae effaith ei eiriau yn gallu bod yn gryf iawn.

Gareth had learned from three trips, and the impact of his words could be very powerful.

Ond roedd rhaid iddo wneud Eira deall.

But he needed to make Eira understand.

"Yma," dechreuodd Gareth a hisian yn rhyfedd i'r niwl.

"Here," began Gareth, whispering strangely to the mist.

"Dyma lle lleiafrifol deulu fi oedd yn byw, mewn amser anodd iawn.

"This is where a minority of my family lived, in very challenging times.

Dyfroedd hanes nawr yn cyrraedd goresgynnol yr enillion.

The waters of history now reach the brink of conquest."

"Ar yr union eiliad honno, gwelodd Eira rywbeth disglair.

At that very moment, Eira saw something shiny.

Roedd hi'n pigo i'r ddaear a chodi artifact bychan, oedd yn edrych fel cerfiad gyda delweddau byd sinistr.

She bent to the ground and picked up a small artifact, which looked like a carving with sinister world images.

"Beth yw hyn?

"What is this?"

" gofynnodd hi, llygaid yn llesg o chwilfrydedd.

she asked, eyes wide with curiosity.

Edrychodd Gareth arno’n ofalus, ac mewn saib o amser, deallodd ei arwyddocâd.

Gareth looked at it carefully, and in a moment of pause, he understood its significance.

Roeddent wedi darganfod darn o hanes.

They had discovered a piece of history.

"Mae'n bosibl bod hwn yn berthynas i'r amser a fu," esboniodd, teimlad o balchder yn ei lais.

"It's possible this relates to a time that once was," he explained, a feeling of pride in his voice.

Yn y funud fe addawsant dau.

In that moment, they both made a promise.

Yn fuan roeddent yn ymuno gyda'i gilydd i ddwyn goleuni ar yr hyn a oedd ganddynt yn eu dwylo, gan ddod yn gysylltiad agos rhwng y gorffennol a'r presennol.

Soon, they joined together to shed light on what they held in their hands, forming a close connection between the past and the present.

Pan ddychwelodd y grŵp yn ôl i'r dosbarth, roedd Eira yn awyddus i rannu ei phrofiad.

When the group returned to the classroom, Eira was eager to share her experience.

Dechreuodd weld hanes yn wahanol, ac roedd Gareth yn gwybod iddi ddechrau gwerthfawrogi'r angerdd yr oedd ef yn ceisio ei gyfleu.

She began to see history differently, and Gareth knew she had started to appreciate the passion he was trying to convey.

Yn y diwedd, roedd y trîp i'r Brecon Beacons nid yn unig am ddysgu am hanes ond hefyd am gysylltu gydag ef.

In the end, the trip to the Brecon Beacons was not only about learning history but also about connecting with it.

Roedd Gareth ac Eira wedi dod o hyd i ddod dros eu hunain, a hynny drwy gariad i'r hanes a chofathu.

Gareth and Eira had found a way to transcend their own boundaries, doing so through a love of history and remembrance.

Roedd trasiedi ac ysbrydoliaeth wedi creu cwlwm cryf rhyngddynt.

Tragedy and inspiration had created a strong bond between them.